A magnanimous number is an integer where there is no place in the number where a + (plus sign) could be added between any two digits to give a non-prime sum.

Task
Magnanimous numbers
You are encouraged to solve this task according to the task description, using any language you may know.


E.G.
  • 6425 is a magnanimous number. 6 + 425 == 431 which is prime; 64 + 25 == 89 which is prime; 642 + 5 == 647 which is prime.
  • 3538 is not a magnanimous number. 3 + 538 == 541 which is prime; 35 + 38 == 73 which is prime; but 353 + 8 == 361 which is not prime.


Traditionally the single digit numbers 0 through 9 are included as magnanimous numbers as there is no place in the number where you can add a plus between two digits at all. (Kind of weaselly but there you are...) Except for the actual value 0, leading zeros are not permitted. Internal zeros are fine though, 1001 -> 1 + 001 (prime), 10 + 01 (prime) 100 + 1 (prime).

There are only 571 known magnanimous numbers. It is strongly suspected, though not rigorously proved, that there are no magnanimous numbers above 97393713331910, the largest one known.


Task
  • Write a routine (procedure, function, whatever) to find magnanimous numbers.
  • Use that function to find and display, here on this page the first 45 magnanimous numbers.
  • Use that function to find and display, here on this page the 241st through 250th magnanimous numbers.
  • Stretch: Use that function to find and display, here on this page the 391st through 400th magnanimous numbers


See also


ALGOL 68

Note: the RC ALGOL 68 primes library (prines.incl.a68) is om a separate page on Rosetta Code, see the above link.

BEGIN # find some magnanimous numbers - numbers where inserting a + between any #
      # digits ab=nd evaluating the sum results in a prime in all cases         #
    PR read "primes.incl.a68" PR                      # include prime utilities #
    # returns the first n magnanimous numbers                                   #
    #         uses global sieve prime which must include 0 and be large enough  #
    #         for all possible sub-sequences of digits                          #
    OP MAGNANIMOUS = ( INT n )[]INT:
       BEGIN
            [ 1 : n ]INT result;
            INT          m count := 0;
            FOR i FROM 0 WHILE m count < n DO
                # split the number into pairs of digit sequences #
                # and check the sums of the pairs are all prime #
                INT  divisor   := 10;
                BOOL all prime := TRUE;
                WHILE IF   INT front = i OVER divisor;
                           front = 0
                      THEN FALSE
                      ELSE all prime := prime[ front + ( i MOD divisor ) ]
                      FI
                DO
                    divisor *:= 10
                OD;
                IF all prime THEN result[ m count +:= 1 ] := i FI
            OD;
            result
       END; # MAGNANIMPUS #
    # prints part of a sequence of magnanimous numbers #
    PROC print magnanimous = ( []INT m, INT first, INT last, STRING legend )VOID:
         BEGIN
             print( ( legend, ":", newline ) );
             FOR i FROM first TO last DO print( ( " ", whole( m[ i ], 0 ) ) ) OD;
             print( ( newline ) )
         END ; # print magnanimous #
    # we assume the first 400 magnanimous numbers will be in 0 .. 1 000 000 #
    # so we will need a sieve of 0 up to 99 999 + 9 #
    []BOOL prime = PRIMESIEVE (  99 999 + 9 );
    # construct the sequence of magnanimous numbers #
    []INT mns = MAGNANIMOUS 400;
    print magnanimous( mns,   1,  45, "First 45 magnanimous numbers" );
    print magnanimous( mns, 241, 250, "Magnanimous numbers 241-250"  );
    print magnanimous( mns, 391, 400, "Magnanimous numbers 391-400"  )
END
Output:
First 45 magnanimous numbers:
 0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110
Magnanimous numbers 241-250:
 17992 19972 20209 20261 20861 22061 22201 22801 22885 24407
Magnanimous numbers 391-400:
 486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

ALGOL W

begin
    % find some Magnanimous numbers - numbers where inserting a "+" between  %
    % any two of the digits and evaluating the sum results in a prime number %
    % implements the sieve of Eratosthenes                                   %
    procedure sieve( logical array s ( * ); integer value n ) ;
    begin
        % start with everything flagged as prime                             % 
        for i := 1 until n do s( i ) := true;
        % sieve out the non-primes                                           %
        s( 1 ) := false;
        for i := 2 until truncate( sqrt( n ) ) do begin
            if s( i ) then for p := i * i step i until n do s( p ) := false
        end for_i ;
    end sieve ;
    % construct an array of magnanimous numbers using the isPrime sieve      %
    procedure findMagnanimous ( logical array magnanimous, isPrime ( * ) ) ;
    begin
        % 1 digit magnanimous numbers                                        %
        for i :=  0 until 9               do magnanimous( i ) := true;
        % initially, the other magnanimous numbers are unknown               %
        for i := 10 until MAGNANIMOUS_MAX do magnanimous( i ) := false;
        % 2 & 3 digit magnanimous numbers                                    %
        for d1 := 1 until 9 do begin
            for d2 := 0 until 9 do begin
                if isPrime( d1 + d2 ) then magnanimous( ( d1 * 10 ) + d2 ) := true
            end for_d2 ;
            for d23 := 0 until 99 do begin
                if isPrime( d1 + d23 ) then begin
                    integer d12, d3;
                    d3  := d23 rem 10;
                    d12 := ( d1 * 10 ) + ( d23 div 10 );
                    if isPrime( d12 + d3 ) then magnanimous( ( d12 * 10 ) + d3 ) := true
                end if_isPrime_d1_plus_d23
            end for_d23
        end for_d1 ;
        % 4 & 5 digit magnanimous numbers                                    %
        for d12 := 10 until 99 do begin
            for d34 := 0 until 99 do begin
                if isPrime( d12 + d34 ) then begin
                    integer d123, d4;
                    d123 := ( d12 * 10 ) + ( d34 div 10 );
                    d4   := d34 rem 10;
                    if isPrime( d123 + d4 ) then begin
                        integer d1, d234;
                        d1   := d12 div 10;
                        d234 := ( ( d12 rem 10 ) * 100 ) + d34;
                        if  isPrime( d1 + d234 ) then magnanimous( ( d12 * 100 ) + d34 ) := true
                    end if_isPrime_d123_plus_d4
                end if_isPrime_d12_plus_d34
            end for_d34 ;
            for d345 := 0 until 999 do begin
                if isPrime( d12 + d345 ) then begin
                    integer d123, d45;
                    d123 := ( d12 * 10 ) + ( d345 div 100 );
                    d45  := d345 rem 100;
                    if isPrime( d123 + d45 ) then begin
                        integer d1234, d5;
                        d1234 := ( d123 * 10 ) + ( d45 div 10 );
                        d5    := d45 rem 10;
                        if isPrime( d1234 + d5 ) then begin
                            integer d1, d2345;
                            d1    := d12 div 10;
                            d2345 := ( ( d12 rem 10 ) * 1000 ) + d345;
                            if isPrime( d1 + d2345 ) then magnanimous( ( d12 * 1000 ) + d345 ) := true
                        end if_isPrime_d1234_plus_d5
                    end if_isPrime_d123_plus_d45
                end if_isPrime_d12_plus_d345
            end for_d234
        end for_d12 ;
        % find 6 digit magnanimous numbers                                   %
        for d123 := 100 until 999 do begin
            for d456 := 0 until 999 do begin
                if isPrime( d123 + d456 ) then begin
                    integer d1234, d56;
                    d1234 := ( d123 * 10 ) + ( d456 div 100 );
                    d56   := d456 rem 100;
                    if isPrime( d1234 + d56 ) then begin
                        integer d12345, d6;
                        d12345 := ( d1234 * 10 ) + ( d56 div 10 );
                        d6     := d56 rem 10;
                        if isPrime( d12345 + d6 ) then begin
                            integer d12, d3456;
                            d12   := d123 div 10;
                            d3456 := ( ( d123 rem 10 ) * 1000 ) + d456;
                            if isPrime( d12 + d3456 ) then begin
                                integer d1, d23456;
                                d1     := d12 div 10;
                                d23456 := ( ( d12 rem 10 ) * 10000 ) + d3456;
                                if isPrime( d1 + d23456 ) then magnanimous( ( d123 * 1000 ) + d456 ) := true
                            end if_isPrime_d12_plus_d3456
                        end if_isPrime_d12345_plus_d6
                    end if_isPrime_d1234_plus_d56
                end if_isPrime_d123_plus_d456
            end for_d456
        end for_d123
    end findMagnanimous ;
    % we look for magnanimous numbers with up to 6 digits, so we need to     %
    % check for primes up to 99999 + 9 = 100008                              %
    integer PRIME_MAX, MAGNANIMOUS_MAX;
    PRIME_MAX       :=  100008;
    MAGNANIMOUS_MAX := 1000000;
    begin
        logical array magnanimous ( 0 :: MAGNANIMOUS_MAX );
        logical array isPrime     ( 1 :: PRIME_MAX       );
        integer mPos;
        integer lastM;
        sieve( isPrime, PRIME_MAX );
        findMagnanimous( magnanimous, isPrime );
        % show some of the magnanimous numbers                               %
        lastM := mPos  := 0;
        i_w := 3; s_w := 1; % output formatting                              %
        for i := 0 until MAGNANIMOUS_MAX do begin
            if magnanimous( i ) then begin
                mPos  := mPos + 1;
                lastM := i;
                if      mPos =   1 then begin
                    write( "Magnanimous numbers 1-45:" );
                    write( i )
                    end
                else if mPos < 46 then begin
                    if mPos rem 15 = 1 then write( i )
                                       else writeon( i )
                    end
                else if mPos = 241 then begin
                    write( "Magnanimous numbers 241-250:" );
                    write( i )
                    end
                else if mPos > 241 and mPos <= 250 then writeon( i )
                else if mPos = 391 then begin
                    write( "Magnanimous numbers 391-400:" );
                    write( i )
                    end
                else if mPos > 391 and mPos <= 400 then writeon( i )
            end if_magnanimous_i
        end for_i ;
        i_w := 1; s_w := 0;
        write( "Last magnanimous number found: ", mPos, " = ", lastM )
    end
end.
Output:
Magnanimous numbers 1-45:
  0   1   2   3   4   5   6   7   8   9  11  12  14  16  20
 21  23  25  29  30  32  34  38  41  43  47  49  50  52  56
 58  61  65  67  70  74  76  83  85  89  92  94  98 101 110
Magnanimous numbers 241-250:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407
Magnanimous numbers 391-400:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081
Last magnanimous number found: 434 = 999994


Amazing Hopper

#include <basico.h>

#proto encontrarunMagnanimouspara(_X_)
#synon _encontrarunMagnanimouspara  siencontréunMagnanimousen

algoritmo

    decimales '0'
    
    res={}, i=0
    iterar grupo( ++i, #(length(res)<400), \
        i, meter según ( si encontré un Magnanimous en 'i', res ))

    #(utf8("Primeros 45 números magnánimos:\n")),   #(res[1:45])
    #(utf8("\n\nNúmeros magnánimos 241 - 250:\n")), #(res[241:250])
    #(utf8("\n\nNúmeros magnánimos 391 - 400:\n")), #(res[391:400]), NL
    luego imprime esto

terminar

subrutinas

encontrar un Magnanimous para(n)
    tn=n, d=0, i=0, pd=0
    iterar
         último dígito  de 'tn', mover a 'd,tn'
         cuando ' tn ' { #( pd += ( d * 10^i ) ) }
    mientras ' #( tn && is prime(tn+pd) ); ++i '

retornar ' #(not(tn)) '
Output:
Primeros 45 números magnánimos:
0,1,2,3,4,5,6,7,8,9,11,12,14,16,20,21,23,25,29,30,32,34,38,41,43,47,49,50,52,56,58,61,65,67,70,74,76,83,85,89,92,94,98,101,110

Números magnánimos 241 - 250:
17992,19972,20209,20261,20861,22061,22201,22801,22885,24407

Números magnánimos 391 - 400:
486685,488489,515116,533176,551558,559952,595592,595598,600881,602081

AWK

# syntax: GAWK -f MAGNANIMOUS_NUMBERS.AWK
# converted from C
BEGIN {
    magnanimous(1,45)
    magnanimous(241,250)
    magnanimous(391,400)
    exit(0)
}
function is_magnanimous(n,  p,q,r) {
    if (n < 10) { return(1) }
    for (p=10; ; p*=10) {
      q = int(n/p)
      r = n % p
      if (!is_prime(q+r)) { return(0) }
      if (q < 10) { break }
    }
    return(1)
}
function is_prime(n,  d) {
    d = 5
    if (n < 2) { return(0) }
    if (!(n % 2)) { return(n == 2) }
    if (!(n % 3)) { return(n == 3) }
    while (d*d <= n) {
      if (!(n % d)) { return(0) }
      d += 2
      if (!(n % d)) { return(0) }
      d += 4
    }
    return(1)
}
function magnanimous(start,stop,  count,i) {
    printf("%d-%d:",start,stop)
    for (i=0; count<stop; ++i) {
      if (is_magnanimous(i)) {
        if (++count >= start) {
          printf(" %d",i)
        }
      }
    }
    printf("\n")
}
Output:
1-45: 0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110
241-250: 17992 19972 20209 20261 20861 22061 22201 22801 22885 24407
391-400: 486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

BASIC

10 DEFINT A-Z
20 L = N : R = 0 : S = 1
30 IF L < 10 GOTO 140
40 R = R + (L MOD 10) * S
50 L = L \ 10
60 S = S * 10
70 P = R + L
80 IF P = 1 GOTO 120 ELSE FOR D = 2 TO SQR(P)
90 IF P MOD D = 0 GOTO 120
100 NEXT D
110 GOTO 30
120 N = N + 1
130 GOTO 20
140 I = I + 1
150 IF I = 1 THEN PRINT "1 - 45:" ELSE IF I = 241 THEN PRINT "241 - 250:"
160 IF I <= 45 OR I > 240 THEN PRINT N,
170 N = N + 1
180 IF I < 250 GOTO 20
190 END
Output:
1 - 45:
 0             1             2             3             4
 5             6             7             8             9
 11            12            14            16            20
 21            23            25            29            30
 32            34            38            41            43
 47            49            50            52            56
 58            61            65            67            70
 74            76            83            85            89
 92            94            98            101           110
241 - 250:
 17992         19972         20209         20261         20861
 22061         22201         22801         22885         24407

BASIC256

#include "isprime.kbs"

dim magn(400)
n = 10
for i = 0 to 9
	magn[i] = i    #all single digit ints are magnanimous by definition
next i

while i < 400
	n += 1
	ns = string(n)
	for j = 1 to length(ns)-1
		lefty = left(ns, j)
		righty = right(ns, length(ns)-j)
		if not isPrime(int(lefty) + int(righty)) then continue while
	next j
	magn[i] = n
	i += 1
end while

for i = 0 to 44
	print i+1, magn[i]
next i

for i =240 to 249
	print i+1, magn[i]
next i

for i = 390 to 399
	print i+1, magn[i]
next i
end
Output:
Same as FreeBASIC entry.

BBC BASIC

      DIM Sieve% 1E5
      Prime%=2
      WHILE Prime%^2 < 1E5
        FOR S%=Prime%*2 TO 1E5 STEP Prime% Sieve%?S%=1 NEXT
        REPEAT Prime%+=1 UNTIL Sieve%?Prime%=0
      ENDWHILE
      Sieve%?1=1

      PRINT "First 45 magnanimous numbers"
      REPEAT
        IF M% > 9 THEN
          FOR I%=LOGM% TO 1 STEP -1
            IF Sieve%?((M% DIV 10^I%) + (M% MOD 10^I%)) EXIT FOR
          NEXT
        ENDIF
        IF I% == 0 THEN
          N%+=1
          IF N% == 240 OR N% == 390 PRINT '"Magnanimous numbers ";N% + 1 "-";N% + 10
          IF N% < 46 OR (N% > 240 AND N% < 251) OR (N% > 390 AND N% < 401) PRINT;M% " ";
        ENDIF
        M%+=1
      UNTIL N% > 400
Output:
First 45 magnanimous numbers
0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110
Magnanimous numbers 241-250
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407
Magnanimous numbers 391-400
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

BCPL

get "libhdr"

let prime(n) = valof
$(  let d = 5
    if n<2 resultis false
    if n rem 2=0 resultis n=2
    if n rem 3=0 resultis n=3
    while d*d <= n
    $(  if n rem d=0 resultis false
        d := d+2
        if n rem d=0 resultis false
        d := d+4
    $)
    resultis true
$)

let magnanimous(n) = valof
$(  let left = n and right = 0 and shift = 1
    while left >= 10
    $(  right := right + (left rem 10) * shift
        shift := shift * 10
        left := left / 10
        unless prime(left + right) resultis false
    $)
    resultis true
$)

let start() be
$(  let n = -1
    for i = 1 to 250
    $(  n := n+1 repeatuntil magnanimous(n)
        if i=1 then writes("1 - 45:*N")
        if i=241 then writes("241 - 250:*N")
        if 0<i<=45 | 240<i<=250
        $(  writed(n, 7)
            if i rem 5=0 then wrch('*N')
        $)
    $)
$)
Output:
1 - 45:
      0      1      2      3      4
      5      6      7      8      9
     11     12     14     16     20
     21     23     25     29     30
     32     34     38     41     43
     47     49     50     52     56
     58     61     65     67     70
     74     76     83     85     89
     92     94     98    101    110
241 - 250:
  17992  19972  20209  20261  20861
  22061  22201  22801  22885  24407

C

Translation of: Go
#include <stdio.h> 
#include <string.h>

typedef int bool;
typedef unsigned long long ull;

#define TRUE 1
#define FALSE 0

/* OK for 'small' numbers. */
bool is_prime(ull n) {
    ull d;
    if (n < 2) return FALSE;
    if (!(n % 2)) return n == 2;
    if (!(n % 3)) return n == 3;
    d = 5;
    while (d * d <= n) {
        if (!(n % d)) return FALSE;
        d += 2;
        if (!(n % d)) return FALSE;
        d += 4;
    }
    return TRUE;
}

void ord(char *res, int n) {
    char suffix[3];
    int m = n % 100;
    if (m >= 4 && m <= 20) {
        sprintf(res,"%dth", n);
        return;
    }
    switch(m % 10) {
        case 1:
            strcpy(suffix, "st");
            break;
        case 2:
            strcpy(suffix, "nd");
            break;
        case 3:
            strcpy(suffix, "rd");
            break;
        default:
            strcpy(suffix, "th");
            break;
    }
    sprintf(res, "%d%s", n, suffix);
}

bool is_magnanimous(ull n) {
    ull p, q, r;
    if (n < 10) return TRUE;
    for (p = 10; ; p *= 10) {
        q = n / p;
        r = n % p;
        if (!is_prime(q + r)) return FALSE;
        if (q < 10) break;
    }
    return TRUE;
}

void list_mags(int from, int thru, int digs, int per_line) {
    ull i = 0;
    int c = 0;
    char res1[13], res2[13];
    if (from < 2) {
        printf("\nFirst %d magnanimous numbers:\n", thru);
    } else {
        ord(res1, from);
        ord(res2, thru);
        printf("\n%s through %s magnanimous numbers:\n", res1, res2);
    }
    for ( ; c < thru; ++i) {
        if (is_magnanimous(i)) {
            if (++c >= from) {
                printf("%*llu ", digs, i);
                if (!(c % per_line)) printf("\n");
            }
        }
    }
}
 
int main() {
    list_mags(1, 45, 3, 15);
    list_mags(241, 250, 1, 10);
    list_mags(391, 400, 1, 10);
    return 0;
}
Output:
First 45 magnanimous numbers:
  0   1   2   3   4   5   6   7   8   9  11  12  14  16  20 
 21  23  25  29  30  32  34  38  41  43  47  49  50  52  56 
 58  61  65  67  70  74  76  83  85  89  92  94  98 101 110 

241st through 250th magnanimous numbers:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407 

391st through 400th magnanimous numbers:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081 

C#

using System; using static System.Console;

class Program {

  static bool[] np; // not-prime array

  static void ms(long lmt) { // populates array, a not-prime is true 
    np = new bool[lmt]; np[0] = np[1] = true;
    for (long n = 2, j = 1; n < lmt; n += j, j = 2) if (!np[n])
        for (long k = n * n; k < lmt; k += n) np[k] = true; }

  static bool is_Mag(long n) { long res, rem;
    for (long p = 10; n >= p; p *= 10) {
      res = Math.DivRem (n, p, out rem);
      if (np[res + rem]) return false; } return true; }

  static void Main(string[] args) { ms(100_009); string mn;
    WriteLine("First 45{0}", mn = " magnanimous numbers:");
    for (long l = 0, c = 0; c < 400; l++) if (is_Mag(l)) {
      if (c++ < 45 || (c > 240 && c <= 250) || c > 390)
        Write(c <= 45 ? "{0,4} " : "{0,8:n0} ", l);
      if (c < 45 && c % 15 == 0) WriteLine();
      if (c == 240) WriteLine ("\n\n241st through 250th{0}", mn);
      if (c == 390) WriteLine ("\n\n391st through 400th{0}", mn); } }
}
Output:
First 45 magnanimous numbers:
   0    1    2    3    4    5    6    7    8    9   11   12   14   16   20 
  21   23   25   29   30   32   34   38   41   43   47   49   50   52   56 
  58   61   65   67   70   74   76   83   85   89   92   94   98  101  110 

241st through 250th magnanimous numbers:
  17,992   19,972   20,209   20,261   20,861   22,061   22,201   22,801   22,885   24,407 

391st through 400th magnanimous numbers:
 486,685  488,489  515,116  533,176  551,558  559,952  595,592  595,598  600,881  602,081

C++

#include <iomanip>
#include <iostream>

bool is_prime(unsigned int n) {
    if (n < 2)
        return false;
    if (n % 2 == 0)
        return n == 2;
    if (n % 3 == 0)
        return n == 3;
    for (unsigned int p = 5; p * p <= n; p += 4) {
        if (n % p == 0)
            return false;
        p += 2;
        if (n % p == 0)
            return false;
    }
    return true;
}

bool is_magnanimous(unsigned int n) {
    for (unsigned int p = 10; n >= p; p *= 10) {
        if (!is_prime(n % p + n / p))
            return false;
    }
    return true;
}

int main() {
    unsigned int count = 0, n = 0;
    std::cout << "First 45 magnanimous numbers:\n";
    for (; count < 45; ++n) {
        if (is_magnanimous(n)) {
            if (count > 0)
                std::cout << (count % 15 == 0 ? "\n" : ", ");
            std::cout << std::setw(3) << n;
            ++count;
        }
    }
    std::cout << "\n\n241st through 250th magnanimous numbers:\n";
    for (unsigned int i = 0; count < 250; ++n) {
        if (is_magnanimous(n)) {
            if (count++ >= 240) {
                if (i++ > 0)
                    std::cout << ", ";
                std::cout << n;
            }
        }
    }
    std::cout << "\n\n391st through 400th magnanimous numbers:\n";
    for (unsigned int i = 0; count < 400; ++n) {
        if (is_magnanimous(n)) {
            if (count++ >= 390) {
                if (i++ > 0)
                    std::cout << ", ";
                std::cout << n;
            }
        }
    }
    std::cout << '\n';
    return 0;
}
Output:
First 45 magnanimous numbers:
  0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  11,  12,  14,  16,  20
 21,  23,  25,  29,  30,  32,  34,  38,  41,  43,  47,  49,  50,  52,  56
 58,  61,  65,  67,  70,  74,  76,  83,  85,  89,  92,  94,  98, 101, 110

241st through 250th magnanimous numbers:
17992, 19972, 20209, 20261, 20861, 22061, 22201, 22801, 22885, 24407

391st through 400th magnanimous numbers:
486685, 488489, 515116, 533176, 551558, 559952, 595592, 595598, 600881, 602081

CLU

prime = proc (n: int) returns (bool)
    if n < 2 then return(false) end
    if n//2 = 0 then return(n=2) end
    if n//3 = 0 then return(n=3) end
    d: int := 5
    while d*d <= n do
        if n//d = 0 then return(false) end
        d := d+2
        if n//d = 0 then return(false) end
        d := d+4
    end
    return(true)
end prime

sum_parts = iter (l: int) yields (int)
    r: int := 0
    s: int := 0
    while l >= 10 do
        r := r + (l // 10) * 10 ** s
        s := s + 1
        l := l / 10
        yield(l + r)
    end
end sum_parts

magnanimous = proc (n: int) returns (bool)
    for s: int in sum_parts(n) do
        if ~prime(s) then return(false) end
    end
    return(true)
end magnanimous

start_up = proc ()
    po: stream := stream$primary_output()
    n: int := 0
    i: int := 0
    c: int := 0

    while i <= 400 do
        while ~magnanimous(n) do n := n+1 end
        i := i+1

        if i=1 then stream$putl(po, "1-45:") c := 0
        elseif i=241 then stream$putl(po, "\n241-250:") c := 0
        elseif i=391 then stream$putl(po, "391-400:") c := 0
        end

        if i <= 45 cor (i > 240 cand i <= 250) cor (i > 390 cand i <= 400) then
            stream$putright(po, int$unparse(n), 7)
            c := c+1
            if c = 10 then stream$putl(po, "") c := 0 end
        end
        n := n+1
    end
end start_up
Output:
1-45:
      0      1      2      3      4      5      6      7      8      9
     11     12     14     16     20     21     23     25     29     30
     32     34     38     41     43     47     49     50     52     56
     58     61     65     67     70     74     76     83     85     89
     92     94     98    101    110
241-250:
  17992  19972  20209  20261  20861  22061  22201  22801  22885  24407
391-400:
 486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

Cowgol

include "cowgol.coh";

sub prime(n: uint32): (r: uint32) is
    r := 0;
    if n <= 4 or n & 1 == 0 or n % 3 == 0 then
        if n == 2 or n == 3 then
            r := 1;
        end if;
        return;
    end if;

    var d: uint32 := 5;
    while d*d <= n loop
        if n % d == 0 then return; end if;
        d := d+2;
        if n % d == 0 then return; end if;
        d := d+4;
    end loop;
    r := 1;
end sub;

sub magnanimous(n: uint32): (r: uint32) is
    r := 1;
    var left: uint32 := n;
    var right: uint32 := 0;
    var shift: uint32 := 1;

    while left >= 10 loop
        right := right + (left % 10) * shift;
        shift := shift * 10;
        left := left / 10;
        if prime(left + right) == 0 then
            r := 0;
            break;
        end if;
    end loop;
end sub;

var i: uint16 := 0;
var n: uint32 := 0;

while i <= 400 loop
    while magnanimous(n) == 0 loop n := n+1; end loop;
    i := i + 1;

    if i == 1 then print("1 - 45:\n");
    elseif i == 241 then print("241 - 250:\n");
    elseif i == 391 then print("390 - 400:\n");
    end if;

    if i<=45 or (i>240 and i<=250) or (i>390 and i<=400) then
        print_i32(n);
        if i % 5 == 0 then print_nl();
        else print_char('\t');
        end if;
    end if;
    n := n + 1;
end loop;
Output:
1 - 45:
0       1       2       3       4
5       6       7       8       9
11      12      14      16      20
21      23      25      29      30
32      34      38      41      43
47      49      50      52      56
58      61      65      67      70
74      76      83      85      89
92      94      98      101     110
241 - 250:
17992   19972   20209   20261   20861
22061   22201   22801   22885   24407
390 - 400:
486685  488489  515116  533176  551558
559952  595592  595598  600881  602081


Delphi

Works with: Delphi version 6.0

Highly modular code breaks the problem down into its basic components, which makes the problem easier to solve conceptually, easier to debug and enhance.

function IsPrime(N: int64): boolean;
{Fast, optimised prime test}
var I,Stop: int64;
begin
if (N = 2) or (N=3) then Result:=true
else if (n <= 1) or ((n mod 2) = 0) or ((n mod 3) = 0) then Result:= false
else
     begin
     I:=5;
     Stop:=Trunc(sqrt(N+0.0));
     Result:=False;
     while I<=Stop do
           begin
           if ((N mod I) = 0) or ((N mod (I + 2)) = 0) then exit;
           Inc(I,6);
           end;
     Result:=True;
     end;
end;

function IsMagnanimous(N: Integer): boolean;
var S,S1,S2: string;
var I,I1,I2: integer;
begin
Result:=True;
if N<10 then exit;
Result:=False;
S:=IntToStr(N);
for I:=2 to Length(S) do
	begin
	S1:=Copy(S,1,I-1);
	S2:=Copy(S,I,(Length(S)-I)+1);
	I1:=StrToInt(S1);
	I2:=StrToInt(S2);
	if not IsPrime(I1+I2) then exit;
	end;
Result:=True;
end;

procedure MagnanimousRange(Memo: TMemo; Start,Stop: integer);
var I,MagCnt,ItemCnt: integer;
var S: string;
begin
S:='';
MagCnt:=0;
ItemCnt:=0;
for I:=0 to High(Integer) do
 if IsMagnanimous(I) then
 	begin
 	Inc(MagCnt);
 	if MagCnt>=Start then
 		begin
 		if MagCnt>Stop then break;
 		S:=S+Format('%12d',[I]);
 		Inc(ItemCnt);
 		if (ItemCnt mod 5)=0 then S:=S+#$0D#$0A;
 		end;
 	end;
Memo.Lines.Add(S);
end;

procedure MagnanimousNumbers(Memo: TMemo);
begin
Memo.Lines.Add('First 45 Magnanimous Numbers');
MagnanimousRange(Memo,0,45);
Memo.Lines.Add('Magnanimous Numbers 241 through 250');
MagnanimousRange(Memo,241,250);
Memo.Lines.Add('Magnanimous Numbers 391 through 400');
MagnanimousRange(Memo,391,400);
end;
Output:
First 45 Magnanimous Numbers
           0           1           2           3           4
           5           6           7           8           9
          11          12          14          16          20
          21          23          25          29          30
          32          34          38          41          43
          47          49          50          52          56
          58          61          65          67          70
          74          76          83          85          89
          92          94          98         101         110

Magnanimous Numbers 241 through 250
       17992       19972       20209       20261       20861
       22061       22201       22801       22885       24407

Magnanimous Numbers 391 through 400
      486685      488489      515116      533176      551558
      559952      595592      595598      600881      602081

Draco

proc isprime(word n) bool:
    word d;
    bool prime;
    if   n<2   then false
    elif n%2=0 then n=2
    elif n%3=0 then n=3
    else
        prime := true;
        d := 5;
        while prime and d*d <= n do
            if n%d=0 then prime := false fi;
            d := d+2;
            if n%d=0 then prime := false fi;
            d := d+4
        od;
        prime
    fi
corp

proc magnanimous(word n) bool:
    word left, right, shift;
    bool magn;
    left := n;
    right := 0;
    shift := 1;
    magn := true;
    while magn and left >= 10 do
        right := right + (left % 10) * shift;
        shift := shift * 10;
        left := left / 10;
        magn := magn and isprime(left + right)
    od;
    magn
corp

proc main() void:
    word n, i;
    n := 0;
    for i from 1 upto 250 do
        while not magnanimous(n) do n := n+1 od;
        if i=1 then writeln("1 - 45:") fi;
        if i=241 then writeln("241 - 250:") fi;
        if i<=45 or i>=241 then
            write(n:7);
            if i%5 = 0 then writeln() fi
        fi;
        n := n+1
    od
corp
Output:
1 - 45:
      0      1      2      3      4
      5      6      7      8      9
     11     12     14     16     20
     21     23     25     29     30
     32     34     38     41     43
     47     49     50     52     56
     58     61     65     67     70
     74     76     83     85     89
     92     94     98    101    110
241 - 250:
  17992  19972  20209  20261  20861
  22061  22201  22801  22885  24407

EasyLang

Translation of: AWK
fastfunc isprim num .
   if num < 2
      return 0
   .
   i = 2
   while i <= sqrt num
      if num mod i = 0
         return 0
      .
      i += 1
   .
   return 1
.
func ismagnan n .
   if n < 10
      return 1
   .
   p = 10
   repeat
      q = n div p
      r = n mod p
      if isprim (q + r) = 0
         return 0
      .
      until q < 10
      p *= 10
   .
   return 1
.
proc magnan start stop . .
   write start & "-" & stop & ":"
   while count < stop
      if ismagnan i = 1
         count += 1
         if count >= start
            write " " & i
         .
      .
      i += 1
   .
   print ""
.
magnan 1 45
magnan 241 250
magnan 391 400

F#

The function

This task uses Extensible Prime Generator (F#)

// Generate Magnanimous numbers. Nigel Galloway: March 20th., 2020
let rec fN n g = match (g/n,g%n) with
                  (0,_)                    -> true
                 |(α,β) when isPrime (α+β) -> fN (n*10) g
                 |_                        -> false
let Magnanimous = let Magnanimous = fN 10 in seq{yield! {0..9}; yield! Seq.initInfinite id |> Seq.skip 10 |> Seq.filter Magnanimous}

The Tasks

First 45
Magnanimous |> Seq.take 45 |> Seq.iter (printf "%d "); printfn ""
Output:
0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110
Magnanimous[241] to Magnanimous[250]
Magnanimous |> Seq.skip 240 |> Seq.take 10 |> Seq.iter (printf "%d "); printfn "";;
Output:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407
Magnanimous[391] to Magnanimous[400]
Magnanimous |> Seq.skip 390 |> Seq.take 10 |> Seq.iter (printf "%d "); printfn "";;
Output:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

Factor

Translation of: Julia
Works with: Factor version 0.99 2020-01-23
USING: grouping io kernel lists lists.lazy math math.functions
math.primes math.ranges prettyprint sequences ;

: magnanimous? ( n -- ? )
    dup 10 < [ drop t ] [
        dup log10 >integer [1,b] [ 10^ /mod + prime? not ] with
        find nip >boolean not
    ] if ;

: magnanimous ( n -- seq )
    0 lfrom [ magnanimous? ] lfilter ltake list>array ;

: show ( seq from to -- ) rot subseq 15 group simple-table. nl ;

400 magnanimous
[ "First 45 magnanimous numbers" print 0 45 show ]
[ "241st through 250th magnanimous numbers" print 240 250 show ]
[ "391st through 400th magnanimous numbers" print 390 400 show ]
tri
Output:
First 45 magnanimous numbers
0  1  2  3  4  5  6  7  8  9  11 12 14 16  20
21 23 25 29 30 32 34 38 41 43 47 49 50 52  56
58 61 65 67 70 74 76 83 85 89 92 94 98 101 110

241st through 250th magnanimous numbers
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407

391st through 400th magnanimous numbers
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

FreeBASIC

#include "isprime.bas"

dim as uinteger magn(0 to 399), i, n=10, j
dim as string ns, lefty, righty
for i = 0 to 9
    magn(i) = i    'all single digit ints are magnanimous by definition
next i

while i<400
    n += 1
    ns = str(n)
    for j = 1 to len(ns)-1
        lefty = left(ns, j)
        righty = right(ns, len(ns)-j)
        if not isprime( val(lefty) + val(righty) ) then continue while
    next j
    magn(i) = n
    i+=1
wend

for i=0 to 44
    print i+1,magn(i)
next i

for i=240 to 249
    print i+1,magn(i)
next i

for i=390 to 399
    print i+1,magn(i)
next i
Output:
1             0
2             1
3             2
4             3
5             4
6             5
7             6
8             7
9             8
10            9
11            11
12            12
13            14
14            16
15            20
16            21
17            23
18            25
19            29
20            30
21            32
22            34
23            38
24            41
25            43
26            47
27            49
28            50
29            52
30            56
31            58
32            61
33            65
34            67
35            70
36            74
37            76
38            83
39            85
40            89
41            92
42            94
43            98
44            101
45            110
241           17992
242           19972
243           20209
244           20261
245           20861
246           22061
247           22201
248           22801
249           22885
250           24407
391           486685
392           488489
393           515116
394           533176
395           551558
396           559952
397           595592
398           595598
399           600881
400           602081

Go

package main

import "fmt"

// OK for 'small' numbers.
func isPrime(n uint64) bool {
    switch {
    case n < 2:
        return false
    case n%2 == 0:
        return n == 2
    case n%3 == 0:
        return n == 3
    default:
        d := uint64(5)
        for d*d <= n {
            if n%d == 0 {
                return false
            }
            d += 2
            if n%d == 0 {
                return false
            }
            d += 4
        }
        return true
    }
}

func ord(n int) string {
    m := n % 100
    if m >= 4 && m <= 20 {
        return fmt.Sprintf("%dth", n)
    }
    m %= 10
    suffix := "th"
    if m < 4 {
        switch m {
        case 1:
            suffix = "st"
        case 2:
            suffix = "nd"
        case 3:
            suffix = "rd"
        }
    }
    return fmt.Sprintf("%d%s", n, suffix)
}

func isMagnanimous(n uint64) bool {
    if n < 10 {
        return true
    }
    for p := uint64(10); ; p *= 10 {
        q := n / p
        r := n % p
        if !isPrime(q + r) {
            return false
        }
        if q < 10 {
            break
        }
    }
    return true
}

func listMags(from, thru, digs, perLine int) {
    if from < 2 {
        fmt.Println("\nFirst", thru, "magnanimous numbers:")
    } else {
        fmt.Printf("\n%s through %s magnanimous numbers:\n", ord(from), ord(thru))
    }
    for i, c := uint64(0), 0; c < thru; i++ {
        if isMagnanimous(i) {
            c++
            if c >= from {
                fmt.Printf("%*d ", digs, i)
                if c%perLine == 0 {
                    fmt.Println()
                }
            }
        }
    }
}

func main() {
    listMags(1, 45, 3, 15)
    listMags(241, 250, 1, 10)
    listMags(391, 400, 1, 10)
}
Output:
First 45 magnanimous numbers:
  0   1   2   3   4   5   6   7   8   9  11  12  14  16  20 
 21  23  25  29  30  32  34  38  41  43  47  49  50  52  56 
 58  61  65  67  70  74  76  83  85  89  92  94  98 101 110 

241st through 250th magnanimous numbers:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407 

391st through 400th magnanimous numbers:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081 

GW-BASIC

Works with: PC-BASIC version any
Works with: BASICA
100 DEFINT A-Z
110 CLS
120 LET L = N
130 LET R = 0
140 LET S = 1
150 IF L < 10 THEN GOTO 300
160 LET R = R+(L MOD 10)*S
170 LET L = L\10
180 LET S = S*10
190 LET P = R+L
200 IF P = 1 THEN GOTO 280 ELSE FOR D = 2 TO SQR(P) 
210 IF P MOD D = 0 THEN GOTO 280
250 NEXT D
270 GOTO 150
280 LET N = N+1
290 GOTO 120
300 LET I = I+1
310 IF I = 1 THEN PRINT "1 - 45:" ELSE IF I = 241 THEN PRINT : PRINT "241 - 250:"
320 IF I <= 45 OR I > 240 THEN PRINT N,
330 LET N = N+1
340 IF I < 250 THEN GOTO 120
350 PRINT
360 END

Haskell

import Data.List.Split ( chunksOf )
import Data.List ( (!!) )

isPrime :: Int -> Bool
isPrime n 
   |n == 2 = True
   |n == 1 = False
   |otherwise = null $ filter (\i -> mod n i == 0 ) [2 .. root]
   where
      root :: Int
      root = floor $ sqrt $ fromIntegral n
   
isMagnanimous :: Int -> Bool
isMagnanimous n = all isPrime $ map (\p -> fst p + snd p ) numberPairs
 where
  str:: String
  str = show n
  splitStrings :: [(String , String)]
  splitStrings = map (\i -> splitAt i str) [1 .. length str - 1] 
  numberPairs :: [(Int , Int)]
  numberPairs = map (\p -> ( read $ fst p , read $ snd p )) splitStrings

printInWidth :: Int -> Int -> String
printInWidth number width = replicate ( width - l ) ' ' ++ str
 where 
  str :: String
  str = show number
  l :: Int
  l = length str

solution :: [Int]
solution = take 400 $ filter isMagnanimous [0 , 1 ..]

main :: IO ( ) 
main = do
   let numbers = solution
       numberlines = chunksOf 10 $ take 45 numbers
   putStrLn "First 45 magnanimous numbers:" 
   mapM_ (\li -> putStrLn (foldl1 ( ++ ) $ map (\n -> printInWidth n 6 ) 
    li )) numberlines 
   putStrLn "241'st to 250th magnanimous numbers:"
   putStr $ show ( numbers !! 240 )
   putStrLn ( foldl1 ( ++ ) $ map(\n -> printInWidth n 8 ) $ take 9 $ 
    drop 241 numbers )   
   putStrLn "391'st to 400th magnanimous numbers:"
   putStr $ show ( numbers !! 390 )
   putStrLn ( foldl1 ( ++ ) $ map(\n -> printInWidth n 8 ) $ drop 391 numbers)
Output:
First 45 magnanimous numbers:
     0     1     2     3     4     5     6     7     8     9
    11    12    14    16    20    21    23    25    29    30
    32    34    38    41    43    47    49    50    52    56
    58    61    65    67    70    74    76    83    85    89
    92    94    98   101   110
241'st to 250th magnanimous numbers:
17992   19972   20209   20261   20861   22061   22201   22801   22885   24407
391'st to 400th magnanimous numbers:
486685  488489  515116  533176  551558  559952  595592  595598  600881  602081

Java

import java.util.ArrayList;
import java.util.List;

public class MagnanimousNumbers {

    public static void main(String[] args) {
        runTask("Find and display the first 45 magnanimous numbers.", 1, 45);
        runTask("241st through 250th magnanimous numbers.", 241, 250);
        runTask("391st through 400th magnanimous numbers.", 391, 400);
    }
    
    private static void runTask(String message, int startN, int endN) {
        int count = 0;
        List<Integer> nums = new ArrayList<>();
        for ( int n = 0 ; count < endN ; n++ ) {
            if ( isMagnanimous(n) ) {
                nums.add(n);
                count++;
            }
        }
        System.out.printf("%s%n", message);
        System.out.printf("%s%n%n", nums.subList(startN-1, endN));
    }
    
    private static boolean isMagnanimous(long n) {
        if ( n >= 0 && n <= 9 ) {
            return true;
        }
        long q = 11;
        for ( long div = 10 ; q >= 10 ; div *= 10 ) {
            q = n / div;
            long r = n % div;
            if ( ! isPrime(q+r) ) {
                return false;
            }
        }
        return true;
    }
    
    private static final int MAX = 100_000;
    private static final boolean[] primes = new boolean[MAX];
    private static boolean SIEVE_COMPLETE = false;
    
    private static final boolean isPrimeTrivial(long test) {
        if ( ! SIEVE_COMPLETE ) {
            sieve();
            SIEVE_COMPLETE = true;
        }
        return primes[(int) test];
    }
    
    private static final void sieve() {
        //  primes
        for ( int i = 2 ; i < MAX ; i++ ) {
            primes[i] = true;            
        }
        for ( int i = 2 ; i < MAX ; i++ ) {
            if ( primes[i] ) {
                for ( int j = 2*i ; j < MAX ; j += i ) {
                    primes[j] = false;
                }
            }
        }
    }

    //  See http://primes.utm.edu/glossary/page.php?sort=StrongPRP
    public static final boolean isPrime(long testValue) {
        if ( testValue == 2 ) return true;
        if ( testValue % 2 == 0 ) return false;
        if ( testValue <= MAX ) return isPrimeTrivial(testValue);
        long d = testValue-1;
        int s = 0;
        while ( d % 2 == 0 ) {
            s += 1;
            d /= 2;
        }
        if ( testValue < 1373565L ) {
            if ( ! aSrp(2, s, d, testValue) ) {
                return false;
            }
            if ( ! aSrp(3, s, d, testValue) ) {
                return false;
            }
            return true;
        }
        if ( testValue < 4759123141L ) {
            if ( ! aSrp(2, s, d, testValue) ) {
                return false;
            }
            if ( ! aSrp(7, s, d, testValue) ) {
                return false;
            }
            if ( ! aSrp(61, s, d, testValue) ) {
                return false;
            }
            return true;
        }
        if ( testValue < 10000000000000000L ) {
            if ( ! aSrp(3, s, d, testValue) ) {
                return false;
            }
            if ( ! aSrp(24251, s, d, testValue) ) {
                return false;
            }
            return true;
        }
        //  Try 5 "random" primes
        if ( ! aSrp(37, s, d, testValue) ) {
            return false;
        }
        if ( ! aSrp(47, s, d, testValue) ) {
            return false;
        }
        if ( ! aSrp(61, s, d, testValue) ) {
            return false;
        }
        if ( ! aSrp(73, s, d, testValue) ) {
            return false;
        }
        if ( ! aSrp(83, s, d, testValue) ) {
            return false;
        }
        //throw new RuntimeException("ERROR isPrime:  Value too large = "+testValue);
        return true;
    }

    private static final boolean aSrp(int a, int s, long d, long n) {
        long modPow = modPow(a, d, n);
        //System.out.println("a = "+a+", s = "+s+", d = "+d+", n = "+n+", modpow = "+modPow);
        if ( modPow == 1 ) {
            return true;
        }
        int twoExpR = 1;
        for ( int r = 0 ; r < s ; r++ ) {
            if ( modPow(modPow, twoExpR, n) == n-1 ) {
                return true;
            }
            twoExpR *= 2;
        }
        return false;
    }
    
    private static final long SQRT = (long) Math.sqrt(Long.MAX_VALUE);
    
    public static final long modPow(long base, long exponent, long modulus) {
        long result = 1;
        while ( exponent > 0 ) {
            if ( exponent % 2 == 1 ) {
                if ( result > SQRT || base > SQRT ) {
                    result = multiply(result, base, modulus);
                }
                else {
                    result = (result * base) % modulus;
                }
            }
            exponent >>= 1;
            if ( base > SQRT ) {
                base = multiply(base, base, modulus);
            }
            else {
                base = (base * base) % modulus;
            }
        }
        return result;
    }


    //  Result is a*b % mod, without overflow.
    public static final long multiply(long a, long b, long modulus) {
        long x = 0;
        long y = a % modulus;
        long t;
        while ( b > 0 ) {
            if ( b % 2 == 1 ) {
                t = x + y;
                x = (t > modulus ? t-modulus : t);
            }
            t = y << 1;
            y = (t > modulus ? t-modulus : t);
            b >>= 1;
        }
        return x % modulus;
    }

}
Output:
Find and display the first 45 magnanimous numbers.
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 14, 16, 20, 21, 23, 25, 29, 30, 32, 34, 38, 41, 43, 47, 49, 50, 52, 56, 58, 61, 65, 67, 70, 74, 76, 83, 85, 89, 92, 94, 98, 101, 110]

241st through 250th magnanimous numbers.
[17992, 19972, 20209, 20261, 20861, 22061, 22201, 22801, 22885, 24407]

391st through 400th magnanimous numbers.
[486685, 488489, 515116, 533176, 551558, 559952, 595592, 595598, 600881, 602081]

J

   write_sum_expressions=: ([: }: ]\) ,"1 '+' ,"1 ([: }. ]\.)   NB. combine prefixes with suffixes
   interstitial_sums=: ".@write_sum_expressions@":
   primeQ=: 1&p:
   magnanimousQ=: 1:`([: *./ [: primeQ interstitial_sums)@.(>&9)
   A=: (#~ magnanimousQ&>) i.1000000       NB. filter 1000000 integers
   #A
434

   strange=: ({. + [: i. -~/)@:(_1 0&+) NB. produce index ranges for output
   I=: _2 <@strange\ 1 45 241 250 391 400
   I (":@:{~ >)~"0 _ A
0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407                                                                   
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081                                                         

jq

Works with: jq

Works with gojq, the Go implementation of jq

For a suitable definition of `is_prime`, see Erdős-primes#jq.

Preliminaries

# To take advantage of gojq's arbitrary-precision integer arithmetic:
def power($b): . as $in | reduce range(0;$b) as $i (1; . * $in);

def divrem($x; $y):
  [$x/$y|floor, $x % $y];

The Task

def ismagnanimous:
  . as $n
  | if $n < 10 then true
    else first(range( 1; tostring|length) as $i
	       | divrem($n; (10|power($i))) as [$q, $r]
               | if ($q + $r) | is_prime == false then 0 else empty end)
         // true
    | . == true
    end;

# An unbounded stream ...
def magnanimous:
  range(0; infinite)
  | select(ismagnanimous);

[limit(400; magnanimous)]
| "First 45 magnanimous numbers:", .[:45],
  "\n241st through 250th magnanimous numbers:", .[241:251],
  "\n391st through 400th magnanimous numbers:", .[391:]
Output:
First 45 magnanimous numbers:
[0,1,2,3,4,5,6,7,8,9,11,12,14,16,20,21,23,25,29,30,32,34,38,41,43,47,49,50,52,56,58,61,65,67,70,74,76,83,85,89,92,94,98,101,110]

241st through 250th magnanimous numbers:
[19972,20209,20261,20861,22061,22201,22801,22885,24407,26201]

391st through 400th magnanimous numbers:
[488489,515116,533176,551558,559952,595592,595598,600881,602081]


Julia

using Primes

function ismagnanimous(n)
    n < 10 && return true
    for i in 1:ndigits(n)-1
        q, r = divrem(n, 10^i)
        !isprime(q + r) && return false
    end
    return true
end

function magnanimous(N)
    mvec, i = Int[], 0
    while length(mvec) < N
        if ismagnanimous(i)
            push!(mvec, i)
        end
        i += 1
    end
    return mvec
end

const mag400 = magnanimous(400)
println("First 45 magnanimous numbers:\n", mag400[1:24], "\n", mag400[25:45])
println("\n241st through 250th magnanimous numbers:\n", mag400[241:250])
println("\n391st through 400th magnanimous numbers:\n", mag400[391:400])
Output:
First 45 magnanimous numbers:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 14, 16, 20, 21, 23, 25, 29, 30, 32, 34, 38, 41]
[43, 47, 49, 50, 52, 56, 58, 61, 65, 67, 70, 74, 76, 83, 85, 89, 92, 94, 98, 101, 110]

241st through 250th magnanimous numbers:
[17992, 19972, 20209, 20261, 20861, 22061, 22201, 22801, 22885, 24407]

391st through 400th magnanimous numbers:
[486685, 488489, 515116, 533176, 551558, 559952, 595592, 595598, 600881, 602081]

Lambdatalk

Translation of: Phix
{def isprime
 {def isprime.loop
  {lambda {:n :m :i}
   {if {> :i :m}
    then true
    else {if {= {% :n :i} 0}
    then false
    else {isprime.loop :n :m {+ :i 2}}
 }}}}
 {lambda {:n}
  {if {= :n 1}
   then false
   else {if {or {= :n 2} {= :n 3} {= :n 5} {= :n 7}}
   then true
   else {if {or {< : n 2} {= {% :n 2} 0}}
   then false
   else {isprime.loop :n {sqrt :n} 3} 
}}}}}
-> isprime

{def magnanimous
 {def magnanimous.loop
  {lambda {:n :p :r}
   {if {>= :n 10}    
    then {let { {:n {floor {/ :n 10}}}
                {:p :p}
                {:r {+ :r {* {% :n 10} :p}}}
              } {if {not {isprime {+ :n :r}}}
                 then false  
                 else {magnanimous.loop :n {* :p 10} :r} } 
         }
    else true }}}
 {lambda {:n}
  {magnanimous.loop :n 1 0} }}
-> magnanimous 
 
{def mags 
 {lambda {:n}
  {S.last
   {S.map {{lambda {:a :i}
           {if {magnanimous :i} then {A.addlast! :i :a} else}} 
          {A.new}}
        {S.serie 0 :n}}}}}
-> mags 

{A.slice 0 45 {mags 110}}
-> [0,1,2,3,4,5,6,7,8,9,11,12,14,16,20,21,23,25,29,30,32,34,38,41,43,47,49,50,52,56,58,61,65,67,70,74,76,83,85,89,92,94,98,101,110]   
   
{A.slice 240 250 {mags 30000}}
-> 
[17992,19972,20209,20261,20861,22061,22201,22801,22885,24407]

{A.slice 390 400 {mags 700000}} 
-> 
[486685,488489,515116,533176,551558,559952,595592,595598,600881,602081]

time of CPU in milliseconds
         iPadPro  MacBookAir  MacBookPro
[0,45] 	      30 	      15 	      12
[240,250] 	2430 	    5770 	    3650
[390,400] 117390 	  284230 	  213210

Mathematica /Wolfram Language

Clear[MagnanimousNumberQ]
MagnanimousNumberQ[Alternatives @@ Range[0, 9]] = True;
MagnanimousNumberQ[n_Integer] := AllTrue[Range[IntegerLength[n] - 1], PrimeQ[Total[FromDigits /@ TakeDrop[IntegerDigits[n], #]]] &]
sel = Select[Range[0, 1000000], MagnanimousNumberQ];
sel[[;; 45]]
sel[[241 ;; 250]]
sel[[391 ;; 400]]
Output:
{0,1,2,3,4,5,6,7,8,9,11,12,14,16,20,21,23,25,29,30,32,34,38,41,43,47,49,50,52,56,58,61,65,67,70,74,76,83,85,89,92,94,98,101,110}
{17992,19972,20209,20261,20861,22061,22201,22801,22885,24407}
{486685,488489,515116,533176,551558,559952,595592,595598,600881,602081}

Modula-2

MODULE MagnanimousNumbers;
FROM InOut IMPORT WriteString, WriteCard, WriteLn;

VAR n, i: CARDINAL;

PROCEDURE prime(n: CARDINAL): BOOLEAN;
    VAR d: CARDINAL;
BEGIN
    IF n<2 THEN RETURN FALSE END;
    IF n MOD 2 = 0 THEN RETURN n = 2 END;
    IF n MOD 3 = 0 THEN RETURN n = 3 END;
    d := 5;
    WHILE d*d <= n DO
        IF n MOD d = 0 THEN RETURN FALSE END;
        INC(d, 2);
        IF n MOD d = 0 THEN RETURN FALSE END;
        INC(d, 4)
    END;
    RETURN TRUE
END prime;

PROCEDURE magnanimous(n: CARDINAL): BOOLEAN;
    VAR left, right, shift: CARDINAL;
BEGIN
    left := n;
    right := 0;
    shift := 1;
    WHILE left >= 10 DO
        INC(right, (left MOD 10) * shift);
        shift := shift * 10;
        left := left DIV 10;
        IF NOT prime(left + right) THEN RETURN FALSE END
    END;
    RETURN TRUE
END magnanimous;

BEGIN
    n := 0;
    FOR i := 1 TO 250 DO
        WHILE NOT magnanimous(n) DO INC(n) END;

        IF    i=1   THEN WriteString("1 - 45:"); WriteLn
        ELSIF i=240 THEN WriteString("241 - 250:"); WriteLn
        END;

        IF (i <= 45) OR (i > 240) THEN
            WriteCard(n, 7);
            IF i MOD 5 = 0 THEN WriteLn END
        END;
        INC(n)
    END
END MagnanimousNumbers.
Output:
1 - 45:
      0      1      2      3      4
      5      6      7      8      9
     11     12     14     16     20
     21     23     25     29     30
     32     34     38     41     43
     47     49     50     52     56
     58     61     65     67     70
     74     76     83     85     89
     92     94     98    101    110
241 - 250:
  17992  19972  20209  20261  20861
  22061  22201  22801  22885  24407

Nim

func isPrime(n: Natural): bool =
  if n < 2: return
  if n mod 2 == 0: return n == 2
  if n mod 3 == 0: return n == 3
  var d = 5
  while d * d <= n:
    if n mod d == 0: return false
    inc d, 2
    if n mod d == 0: return false
    inc d, 4
  return true


func isMagnanimous(n: Natural): bool =
  var p = 10
  while true:
    let a = n div p
    let b = n mod p
    if a == 0: break
    if not isPrime(a + b): return false
    p *= 10
  return true


iterator magnanimous(): (int, int) =
  var n, count = 0
  while true:
    if n.isMagnanimous:
      inc count
      yield (count, n)
    inc n


for (i, n) in magnanimous():
  if i in 1..45:
    if i == 1: stdout.write "First 45 magnanimous numbers:\n  "
    stdout.write n, if i == 45: '\n' else: ' '

  elif i in 241..250:
    if i == 241: stdout.write "\n241st through 250th magnanimous numbers:\n  "
    stdout.write n, if i == 250: "\n" else: "  "

  elif i in 391..400:
    if i == 391: stdout.write "\n391st through 400th magnanimous numbers:\n  "
    stdout.write n, if i == 400: "\n" else: "  "

  elif i > 400:
    break
Output:
First 45 magnanimous numbers:
  0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110

241st through 250th magnanimous numbers:
  17992  19972  20209  20261  20861  22061  22201  22801  22885  24407

391st through 400th magnanimous numbers:
  486685  488489  515116  533176  551558  559952  595592  595598  600881  602081

Pascal

Works with: Free Pascal

Version nearly like on Talk.
Eliminating all numbers, which would sum to 5 in the last digit.
On TIO.RUN found all til 569 84448000009 0.715 s

program Magnanimous;
//Magnanimous Numbers
//algorithm find only numbers where all digits are even except the last
//or where all digits are odd except the last
//so 1,11,20,101,1001 will not be found
//starting at 100001  "1>"+x"0"+"1" is not prime because of 1001 not prime
{$IFDEF FPC}
  {$MODE DELPHI}
  {$Optimization ON}
  {$CODEALIGN proc=16}
{$ELSE}
  {$APPTYPE CONSOLE}
{$ENDIF}
{$DEFINE USE_GMP}
uses
  //strUtils, // commatize Numb2USA
  {$IFDEF USE_GMP}gmp,{$ENDIF}
  SysUtils;
const
  MaxLimit = 10*1000*1000 +10;
  MAXHIGHIDX = 10;
type
   tprimes = array of byte;
   tBaseType = Byte;
   tpBaseType = pByte;
   tBase =array[0..15] of tBaseType;
   tNumType = NativeUint;
   tSplitNum = array[0..15] of tNumType;
   tMagList  = array[0..1023] of Uint64;
var
  {$ALIGN 32}
  MagList : tMagList;

  dgtBase5,  // count in Base 5
  dgtORMask, //Mark of used digit (or (1 shl Digit ))
  dgtEvenBase10,
  dgtOddBase10: tbase;

  primes : tprimes;
  {$IFDEF USE_GMP} z : mpz_t;gmp_count :NativeUint;{$ENDIF}
  pPrimes0 : pByte;
  T0: int64;
  HighIdx,num,MagIdx,count,cnt: NativeUint;

  procedure InitPrimes;
  const
    smallprimes :array[0..5] of byte = (2,3,5,7,11,13);
  var
    pPrimes : pByte;
    p,i,j,l : NativeUint;
  begin
    l := 1;
    for j := 0 to High(smallprimes) do
      l*= smallprimes[j];
    //scale primelimit to be multiple of l
    i :=((MaxLimit-1) DIV l+1)*l+1;//+1 should suffice
    setlength(primes,i);
    pPrimes := @primes[0];

    for j := 0 to High(smallprimes) do
    begin
      p := smallprimes[j];
      i := p;
      if j <> 0 then
        p +=p;
      while i <= l do
      begin
        pPrimes[i] := 1;
        inc(i,p)
      end;
    end;
    //turn the prime wheel
    for p := length(primes) div l -1 downto 1 do
      move(pPrimes[1],pPrimes[p*l+1],l);

    l := High(primes);
    //reinsert smallprimes
    for j := 0 to High(smallprimes) do
      pPrimes[smallprimes[j]] := 0;
    pPrimes[1]:=1;
    pPrimes[0]:=1;

    p := smallprimes[High(smallprimes)];
    repeat
      repeat
        inc(p)
      until pPrimes[p] = 0;
      j :=  l div p;
      while (pPrimes[j]<> 0) AND (j>=p) do
        dec(j);
      if j<p then
        BREAK;
      //delta  going downwards no factor 2,3 :-2 -4 -2 -4
      i := (j+1) mod 6;
      if i = 0 then
        i :=4;
      repeat
        while (pPrimes[j]<> 0) AND (j>=p) do
        begin
          dec(j,i);
          i := 6-i;
        end;
        if j<p then
          BREAK;
        pPrimes[j*p] := 1;
        dec(j,i);
        i := 6-i;
      until j<p;
    until false;

    pPrimes0 := pPrimes;
  end;

  procedure InsertSort(pMag:pUint64; Left, Right : NativeInt );
  var
    I, J: NativeInt;
    Pivot : Uint64;
  begin
    for i:= 1 + Left to Right do
    begin
      Pivot:= pMag[i];
      j:= i - 1;
      while (j >= Left) and (pMag[j] > Pivot) do
      begin
        pMag[j+1]:=pMag[j];
        Dec(j);
      end;
      pMag[j+1]:= pivot;
    end;
  end;

  procedure OutBase5;
  var
    pb: tpBaseType;
    i : NativeUint;
  begin
    write(count :10);
    pb:= @dgtBase5[0];
    for i := HighIdx downto 0 do
      write(pb[i]:3);
    write(' : ' );
    pb:= @dgtORMask[0];
    for i := HighIdx downto 0 do
      write(pb[i]:3);
  end;

  function Base10toNum(var dgtBase10: tBase):NativeUint;
  var
    i : NativeInt;
  begin
    Result := 0;
    for i := HighIdx downto 0 do
      Result := Result * 10 + dgtBase10[i];
  end;

  procedure OutSol(cnt:Uint64);
  begin
    writeln(MagIdx:4,cnt:13,Base10toNum(dgtOddBase10):20,
           (Gettickcount64-T0) / 1000: 10: 3, ' s');
  end;

  procedure CnvEvenBase10(lastIdx:NativeInt);
  var
    pdgt : tpBaseType;
    idx: nativeint;
  begin
    pDgt := @dgtEvenBase10[0];
    for idx := lastIdx downto 1 do
      pDgt[idx] := 2 * dgtBase5[idx];
    pDgt[0] := 2 * dgtBase5[0]+1;
  end;

  procedure CnvOddBase10(lastIdx:NativeInt);
  var
    pdgt : tpBaseType;
    idx: nativeint;
  begin
    pDgt := @dgtOddBase10[0];
    //make all odd
    for idx := lastIdx downto 1 do
      pDgt[idx] := 2 * dgtBase5[idx] + 1;
    //but the lowest even
    pDgt[0] := 2 * dgtBase5[0];
  end;

  function IncDgtBase5:NativeUint;
  // increment n base 5 until resulting sum of split number
  // can't end in 5
  var
    pb: tpBaseType;
    n,i: nativeint;
  begin
    result := 0;
    repeat
      repeat
        //increment Base5
        pb:= @dgtBase5[0];
         i := 0;
        repeat
          n := pb[i] + 1;
          if n < 5 then
          begin
            pb[i] := n;
            break;
          end;
          pb[i] := 0;
          Inc(i);
        until False;

        if HighIdx < i then
        begin
          HighIdx := i;
          pb[i] := 0;
        end;

        if result < i then
          result := i;

        n := dgtORMask[i+1];
        while i >= 0 do
        begin
          n := n OR (1 shl pb[i]);
          dgtORMask[i]:= n;
          if n = 31 then
            break;
          dec(i);
        end;

        if HighIdx<4 then
          break;

        if (n <> 31) OR (i=0) then
          break;
        //Now there are all digits are used at digit i ( not in last pos)
        //this will always lead to a number ending in 5-> not prime
        //so going on with a number that will change the used below i to highest digit
        //to create an overflow of the next number, to change the digits
        dec(i);
        repeat
          pb[i] := 4;
          dgtORMask[i]:= 31;
          dec(i);
        until i < 0;

      until false;
      if HighIdx<4 then
        break;

      n := dgtORMask[1];
      //ending in 5. base10(base5) for odd 1+4(0,2),3+2(1,1),5+0(2,0)
      i := pb[0];
      if i <= 2 then
      begin
        i := 1 shl (2-i);
      end
      else
      Begin
        //ending in 5 7+8(3,4),9+6(4,3)
        i := 1 shl (4-i);
        n := n shr 3;
      end;
      if (i AND n) = 0 then
        BREAK;
    until false;
  end;

  procedure CheckMagn(var dgtBase10: tBase);
  //split number into sum of all "partitions" of digits
  //check if sum is always prime
  //1234 -> 1+234,12+34 ;123+4
  var
    LowSplitNum : tSplitNum;
    i,fac,n: NativeInt;
    isMagn : boolean;
  Begin
    n := 0;
    fac := 1;
    For i := 0 to HighIdx-1 do
    begin
      n := fac*dgtBase10[i]+n;
      fac *=10;
      LowSplitNum[HighIdx-1-i] := n;
    end;

    n := 0;
    fac := HighIdx;
    isMagn := true;

    For i := 0 to fac-1 do
    begin
      //n = HighSplitNum[i]
      n := n*10+dgtBase10[fac-i];
      LowSplitNum[i] += n;
      if LowSplitNum[i]<=MAXLIMIT then
      begin
        isMagn := isMagn AND (pPrimes0[LowSplitNum[i]] = 0);
        if NOT(isMagn) then
          EXIT;
      end;
    end;
    {$IFDEF USE_GMP}
    For i := 0 to fac-1 do
    begin
      n := LowSplitNum[i];
      if n >MAXLIMIT then
      Begin
//      IF NOT((n mod 30) in [1,7,11,13,17,19,23,29]) then    EXIT;
        mpz_set_ui(z,n);
        gmp_count +=1;
        isMagn := isMagn AND (mpz_probab_prime_p(z,1) >0);
        if NOT(isMagn) then
          EXIT;
      end;
    end;

   {$ENDIF}
    //insert magnanimous numbers
    num := Base10toNum(dgtBase10);
    MagList[MagIdx] := num;
    inc(MagIdx);
  end;

function Run(StartDgtCount:byte):Uint64;
var
  lastIdx: NativeInt;
begin
  result := 0;
  HighIdx := StartDgtCount;// 7 start with 7 digits
  LastIdx := HighIdx;
  repeat
    if dgtBase5[HighIdx] <> 0 then
    Begin
      CnvEvenBase10(LastIdx);
      CheckMagn(dgtEvenBase10);
    end;
    CnvOddBase10(LastIdx);
    CheckMagn(dgtOddBase10);
    inc(result);
    //output for still running every 16.22 Mio
    IF result AND (1 shl 22-1) = 0 then
      OutSol(result);

    lastIdx := IncDgtBase5;
  until HighIdx > MAXHIGHIDX;

end;

BEGIN
  {$IFDEF USE_GMP}mpz_init_set_ui(z,0);{$ENDIF}
  T0 := Gettickcount64;
  InitPrimes;
  T0 -= Gettickcount64;
  writeln('getting primes ',-T0 / 1000: 0: 3, ' s');
  T0 := Gettickcount64;
  fillchar(dgtBase5,SizeOf(dgtBase5),#0);
  fillchar(dgtEvenBase10,SizeOf(dgtEvenBase10),#0);
  fillchar(dgtOddBase10,SizeOf(dgtOddBase10),#0);
//Magnanimous Numbers that can not be found by this algorithm
  MagIdx := 0;
  MagList[MagIdx] := 1;inc(MagIdx);
  MagList[MagIdx] := 11;inc(MagIdx);
  MagList[MagIdx] := 20;inc(MagIdx);
  MagList[MagIdx] := 101;inc(MagIdx);
  MagList[MagIdx] := 1001;inc(MagIdx);
  //cant be checked easy for ending in 5
  MagList[MagIdx] := 40001;inc(MagIdx);
  {$IFDEF USE_GMP} mpz_init_set_ui(z,0);{$ENDIF}

  count := Run(0);

  writeln;
  CnvOddBase10(highIdx);
  writeln(MagIdx:5,count:12,Base10toNum(dgtOddBase10):18,
           (Gettickcount64-T0) / 1000: 10: 3, ' s');
  InsertSort(@MagList[0],0,MagIdx-1);

  {$IFDEF USE_GMP} mpz_clear(z);writeln('Count of gmp tests ',gmp_count);{$ENDIF}
  For cnt := 0 to MagIdx-1 do
    writeln(cnt+1:3,'   ',MagList[cnt]);
  {$IFDEF WINDOWS}
    readln;
  {$ENDIF}
end.
Output:
TIO.RUN
Real time: 0.924 s User time: 0.864 s Sys. time: 0.053 s CPU share: 99.29 %

getting primes 0.023 s
 567      4194304         53771777176     0.400 s

  569     6990860      111111111110     0.715 s
Count of gmp tests 45755
  1   0
  2   1
  3   2
  4   3
  5   4
  6   5
  7   6
  8   7
  9   8
 10   9
 11   11
 12   12
 13   14
 14   16
 15   20
 16   21
 17   23
 18   25
 19   29
 20   30
 21   32
 22   34
 23   38
 24   41
 25   43
 26   47
 27   49
 28   50
 29   52
 30   56
 31   58
 32   61
 33   65
 34   67
 35   70
 36   74
 37   76
 38   83
 39   85
 40   89
 41   92
 42   94
 43   98
 44   101
 45   110
 46   112
 47   116
 48   118
 49   130
 50   136
 51   152
 52   158
 53   170
 54   172
 55   203
 56   209
 57   221
 58   227
 59   229
 60   245
 61   265
 62   281
 63   310
 64   316
 65   334
 66   338
 67   356
 68   358
 69   370
 70   376
 71   394
 72   398
 73   401
 74   403
 75   407
 76   425
 77   443
 78   449
 79   467
 80   485
 81   512
 82   518
 83   536
 84   538
 85   554
 86   556
 87   574
 88   592
 89   598
 90   601
 91   607
 92   625
 93   647
 94   661
 95   665
 96   667
 97   683
 98   710
 99   712
100   730
101   736
102   754
103   772
104   776
105   790
106   794
107   803
108   809
109   821
110   845
111   863
112   881
113   889
114   934
115   938
116   952
117   958
118   970
119   974
120   992
121   994
122   998
123   1001
124   1112
125   1130
126   1198
127   1310
128   1316
129   1598
130   1756
131   1772
132   1910
133   1918
134   1952
135   1970
136   1990
137   2209
138   2221
139   2225
140   2249
141   2261
142   2267
143   2281
144   2429
145   2447
146   2465
147   2489
148   2645
149   2681
150   2885
151   3110
152   3170
153   3310
154   3334
155   3370
156   3398
157   3518
158   3554
159   3730
160   3736
161   3794
162   3934
163   3974
164   4001
165   4027
166   4063
167   4229
168   4247
169   4265
170   4267
171   4427
172   4445
173   4463
174   4643
175   4825
176   4883
177   5158
178   5176
179   5374
180   5516
181   5552
182   5558
183   5594
184   5752
185   5972
186   5992
187   6001
188   6007
189   6067
190   6265
191   6403
192   6425
193   6443
194   6485
195   6601
196   6685
197   6803
198   6821
199   7330
200   7376
201   7390
202   7394
203   7534
204   7556
205   7592
206   7712
207   7934
208   7970
209   8009
210   8029
211   8221
212   8225
213   8801
214   8821
215   9118
216   9172
217   9190
218   9338
219   9370
220   9374
221   9512
222   9598
223   9710
224   9734
225   9752
226   9910
227   11116
228   11152
229   11170
230   11558
231   11930
232   13118
233   13136
234   13556
235   15572
236   15736
237   15938
238   15952
239   17716
240   17752
241   17992
242   19972
243   20209
244   20261
245   20861
246   22061
247   22201
248   22801
249   22885
250   24407
251   26201
252   26285
253   26881
254   28285
255   28429
256   31370
257   31756
258   33118
259   33538
260   33554
261   35116
262   35776
263   37190
264   37556
265   37790
266   37930
267   39158
268   39394
269   40001
270   40043
271   40049
272   40067
273   40427
274   40463
275   40483
276   42209
277   42265
278   44009
279   44443
280   44447
281   46445
282   48089
283   48265
284   51112
285   53176
286   53756
287   53918
288   55516
289   55552
290   55558
291   55576
292   55774
293   57116
294   57754
295   60007
296   60047
297   60403
298   60443
299   60667
300   62021
301   62665
302   64645
303   66667
304   66685
305   68003
306   68683
307   71536
308   71572
309   71716
310   71752
311   73156
312   75374
313   75556
314   77152
315   77554
316   79330
317   79370
318   80009
319   80029
320   80801
321   80849
322   82265
323   82285
324   82825
325   82829
326   84265
327   86081
328   86221
329   88061
330   88229
331   88265
332   88621
333   91792
334   93338
335   93958
336   93994
337   99712
338   99998
339   111112
340   111118
341   111170
342   111310
343   113170
344   115136
345   115198
346   115772
347   117116
348   119792
349   135158
350   139138
351   151156
352   151592
353   159118
354   177556
355   193910
356   199190
357   200209
358   200809
359   220021
360   220661
361   222245
362   224027
363   226447
364   226681
365   228601
366   282809
367   282881
368   282889
369   311156
370   319910
371   331118
372   333770
373   333994
374   335156
375   339370
376   351938
377   359794
378   371116
379   373130
380   393554
381   399710
382   400049
383   404249
384   408049
385   408889
386   424607
387   440843
388   464447
389   484063
390   484445
391   486685
392   488489
393   515116
394   533176
395   551558
396   559952
397   595592
398   595598
399   600881
400   602081
401   626261
402   628601
403   644485
404   684425
405   686285
406   711512
407   719710
408   753316
409   755156
410   773554
411   777712
412   777776
413   799394
414   799712
415   800483
416   802061
417   802081
418   804863
419   806021
420   806483
421   806681
422   822265
423   864883
424   888485
425   888601
426   888643
427   911390
428   911518
429   915752
430   931130
431   975772
432   979592
433   991118
434   999994
435   1115756
436   1137770
437   1191518
438   1197370
439   1353136
440   1379930
441   1533736
442   1593538
443   1711576
444   1791110
445   1795912
446   1915972
447   1951958
448   2000221
449   2008829
450   2442485
451   2604067
452   2606647
453   2664425
454   2666021
455   2828809
456   2862445
457   3155116
458   3171710
459   3193198
460   3195338
461   3195398
462   3315358
463   3373336
464   3573716
465   3737534
466   3751576
467   3939118
468   4000483
469   4408603
470   4468865
471   4488245
472   4644407
473   5115736
474   5357776
475   5551376
476   5579774
477   5731136
478   5759594
479   5959774
480   6462667
481   6600227
482   6600443
483   6608081
484   6640063
485   6640643
486   6824665
487   6864485
488   6866683
489   7113710
490   7133110
491   7139390
492   7153336
493   7159172
494   7311170
495   7351376
496   7719370
497   7959934
498   7979534
499   8044009
500   8068201
501   8608081
502   8844449
503   9171170
504   9777910
505   9959374
506   11771992
507   13913170
508   15177112
509   17115116
510   19337170
511   19713130
512   20266681
513   22086821
514   22600601
515   22862885
516   26428645
517   28862465
518   33939518
519   37959994
520   40866083
521   44866043
522   48606043
523   48804809
524   51137776
525   51513118
526   53151376
527   53775934
528   59593574
529   60402247
530   60860603
531   62202281
532   64622665
533   66864625
534   66886483
535   71553536
536   77917592
537   82486825
538   86842265
539   91959398
540   95559998
541   117711170
542   222866845
543   228440489
544   244064027
545   280422829
546   331111958
547   400044049
548   460040803
549   511151552
550   593559374
551   606202627
552   608844043
553   622622801
554   622888465
555   773719910
556   844460063
557   882428665
558   995955112
559   1777137770
560   2240064227
561   2444402809
562   5753779594
563   6464886245
564   9151995592
565   22226226625
566   31993717930
567   39393115598
568   46884486265
569   84448000009

Perl

Translation of: Raku
Library: ntheory
use strict;
use warnings;
use feature 'say';
use ntheory 'is_prime';

sub magnanimous {
    my($n) = @_;
    my $last;
    for my $c (1 .. length($n) - 1) {
        ++$last and last unless is_prime substr($n,0,$c) + substr($n,$c)
    }
    not $last;
}

my @M;
for ( my $i = 0, my $count = 0; $count < 400; $i++ ) {
    ++$count and push @M, $i if magnanimous($i);
}

say "First 45 magnanimous numbers\n".
    (sprintf "@{['%4d' x 45]}", @M[0..45-1]) =~ s/(.{60})/$1\n/gr;

say "241st through 250th magnanimous numbers\n" .
    join ' ', @M[240..249];

say "\n391st through 400th magnanimous numbers\n".
    join ' ', @M[390..399];
Output:
First 45 magnanimous numbers
   0   1   2   3   4   5   6   7   8   9  11  12  14  16  20
  21  23  25  29  30  32  34  38  41  43  47  49  50  52  56
  58  61  65  67  70  74  76  83  85  89  92  94  98 101 110

241st through 250th magnanimous numbers
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407

391st through 400th magnanimous numbers
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

Phix

with javascript_semantics 
function magnanimous(integer n)
    integer p = 1, r = 0
    while n>=10 do
        r += remainder(n,10)*p
        n = floor(n/10)
        if not is_prime(n+r) then return false end if
        p *= 10
    end while
    return true
end function
 
sequence mag = {}
integer n = 0
while length(mag)<400 do
    if magnanimous(n) then mag &= n end if
    n += 1
end while
puts(1,"First 45 magnanimous numbers: ") pp(mag[1..45],{pp_Indent,30,pp_IntCh,false,pp_Maxlen,100})
printf(1,"magnanimous numbers[241..250]: %v\n", {mag[241..250]})
printf(1,"magnanimous numbers[391..400]: %v\n", {mag[391..400]})
Output:
First 45 magnanimous numbers: {0,1,2,3,4,5,6,7,8,9,11,12,14,16,20,21,23,25,29,30,32,34,38,41,43,
                               47,49,50,52,56,58,61,65,67,70,74,76,83,85,89,92,94,98,101,110}
magnanimous numbers[241..250]: {17992,19972,20209,20261,20861,22061,22201,22801,22885,24407}
magnanimous numbers[391..400]: {486685,488489,515116,533176,551558,559952,595592,595598,600881,602081}

PicoLisp

(de **Mod (X Y N)
   (let M 1
      (loop
         (when (bit? 1 Y)
            (setq M (% (* M X) N)) )
         (T (=0 (setq Y (>> 1 Y)))
            M )
         (setq X (% (* X X) N)) ) ) )
(de isprime (N)
   (cache '(NIL) N
      (if (== N 2)
         T
         (and
            (> N 1)
            (bit? 1 N)
            (let (Q (dec N)  N1 (dec N)  K 0  X)
               (until (bit? 1 Q)
                  (setq
                     Q (>> 1 Q)
                     K (inc K) ) )
               (catch 'composite
                  (do 16
                     (loop
                        (setq X
                           (**Mod
                              (rand 2 (min (dec N) 1000000000000))
                              Q
                              N ) )
                        (T (or (=1 X) (= X N1)))
                        (T
                           (do K
                              (setq X (**Mod X 2 N))
                              (when (=1 X) (throw 'composite))
                              (T (= X N1) T) ) )
                        (throw 'composite) ) )
                  (throw 'composite T) ) ) ) ) ) )
(de numbers (N)
   (let (P 10  Q N)
      (make
         (until (> 10 Q)
            (link
               (+
                  (setq Q (/ N P))
                  (% N P) ) )
            (setq P (* P 10)) ) ) ) )
(de ismagna (N)
   (or 
      (> 10 N)
      (fully isprime (numbers N)) ) )
(let (C 0  N 0 Lst)
   (setq Lst
      (make
         (until (== C 401)
            (when (ismagna N)
               (link N)
               (inc 'C) )
            (inc 'N) ) ) )
   (println (head 45 Lst))
   (println (head 10 (nth Lst 241)))
   (println (head 10 (nth Lst 391))) )
Output:
(0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110)
(17992 19972 20209 20261 20861 22061 22201 22801 22885 24407)
(486685 488489 515116 533176 551558 559952 595592 595598 600881 602081)

PL/M

This sample can be compiled with the original 8080 PL/M compiler and run under CP/M (or a clone/emulator).
THe original 8080 PL/M only supports 8 and 16 bit quantities, so this only shows magnanimous numbers up to the 250th.

100H: /* FIND SOME MAGNANIMOUS NUMBERS - THOSE WHERE INSERTING '+' BETWEEN  */
   /* ANY TWO OF THE DIGITS AND EVALUATING THE SUM RESULTS IN A PRIME       */
   BDOS: PROCEDURE( FN, ARG ); /* CP/M BDOS SYSTEM CALL */
      DECLARE FN BYTE, ARG ADDRESS;
      GOTO 5;
   END BDOS;
   PRINT$CHAR:   PROCEDURE( C ); DECLARE C BYTE; CALL BDOS( 2, C );    END;
   PRINT$STRING: PROCEDURE( S ); DECLARE S ADDRESS; CALL BDOS( 9, S ); END;
   PRINT$NL:     PROCEDURE; CALL PRINT$STRING( .( 0DH, 0AH, '$' ) );   END;
   PRINT$NUMBER: PROCEDURE( N );
      DECLARE N ADDRESS;
      DECLARE V ADDRESS, N$STR( 6 ) BYTE, W BYTE;
      V = N;
      W = LAST( N$STR );
      N$STR( W ) = '$';
      N$STR( W := W - 1 ) = '0' + ( V MOD 10 );
      DO WHILE( ( V := V / 10 ) > 0 );
         N$STR( W := W - 1 ) = '0' + ( V MOD 10 );
      END;
      IF N < 100 THEN DO;
         IF N < 10 THEN CALL PRINT$CHAR( ' ' );
         CALL PRINT$CHAR( ' ' );
      END;
      CALL PRINT$STRING( .N$STR( W ) );
   END PRINT$NUMBER;
   /* INTEGER SQUARE ROOT: BASED ON THE ONE IN THE PL/M FROBENIUS NUMBERS */
   SQRT: PROCEDURE( N )ADDRESS;
      DECLARE ( N, X0, X1 ) ADDRESS;
      IF N <= 3 THEN DO;
          IF N = 0 THEN X0 = 0; ELSE X0 = 1;
          END;
      ELSE DO;
         X0 = SHR( N, 1 );
         DO WHILE( ( X1 := SHR( X0 + ( N / X0 ), 1 ) ) < X0 );
            X0 = X1;
         END;
      END;
      RETURN X0;
   END SQRT;

   DECLARE MAGNANIMOUS (251)ADDRESS; /* MAGNANIMOUS NUMBERS              */
   DECLARE FALSE           LITERALLY '0';
   DECLARE TRUE            LITERALLY '0FFH';
   /* TO FIND MAGNANIMOUS NUMBERS UP TO 30$000, WE NEED TO FIND PRIMES   */
   /* UP TO 9$999 + 9 = 10$008                                           */
   DECLARE MAX$PRIME       LITERALLY '10$008';
   DECLARE DCL$PRIME       LITERALLY '10$009';
   /* SIEVE THE PRIMES TO MAX$PRIME */
   DECLARE ( I, S ) ADDRESS;
   DECLARE PRIME ( DCL$PRIME )BYTE;
   PRIME( 1 ) = FALSE; PRIME( 2 ) = TRUE;
   DO I = 3 TO LAST( PRIME ) BY 2; PRIME( I ) = TRUE;  END;
   DO I = 4 TO LAST( PRIME ) BY 2; PRIME( I ) = FALSE; END;
   DO I = 3 TO SQRT( MAX$PRIME );
      IF PRIME( I ) THEN DO;
         DO S = I * I TO LAST( PRIME ) BY I + I;PRIME( S ) = FALSE; END;
      END;
   END;

   /* FIND THE MAGNANIMOUS NUMBERS                                       */
   FIND$MAGNANIMOUS: PROCEDURE;
      DECLARE ( D1, D2, D3, D4, D5
              , D12, D123, D1234
              , D23, D234, D2345
              , D34, D345, D45
              ) ADDRESS;
      DECLARE M$COUNT ADDRESS; /* COUNT OF MAGNANIMOUS NUMBERS FOUND     */
      STORE$MAGNANIMOUS: PROCEDURE( N )BYTE;
         DECLARE N ADDRESS;
         M$COUNT = M$COUNT + 1;
         IF M$COUNT <= LAST( MAGNANIMOUS ) THEN MAGNANIMOUS( M$COUNT ) = N;
         RETURN M$COUNT <= LAST( MAGNANIMOUS );
      END STORE$MAGNANIMOUS;

      M$COUNT = 0;
      /* 1 DIGIT MAGNANIMOUS NUMBERS                                        */
      DO D1 = 0 TO 9; IF NOT STORE$MAGNANIMOUS( D1 ) THEN RETURN; END;
      /* 2 DIGIT MAGNANIMOUS NUMBERS                                        */
      DO D1 = 1 TO 9;
         DO D2 = 0 TO 9;
            IF PRIME( D1 + D2 ) THEN DO;
               IF NOT STORE$MAGNANIMOUS( ( D1 * 10 ) + D2 ) THEN RETURN;
            END;
         END;
      END;
      /* 3 DIGIT MAGNANIMOUS NUMBERS                                        */
      DO D1 = 1 TO 9;
         DO D23 = 0 TO 99;
            IF PRIME( D1 + D23 ) THEN DO;
               D3  = D23 MOD 10;
               D12 = ( D1 * 10 ) + ( D23 / 10 );
               IF PRIME( D12 + D3 ) THEN DO;
                  IF NOT STORE$MAGNANIMOUS( ( D12 * 10 ) + D3 ) THEN RETURN;
               END;
            END;
         END;
      END;
      /* 4 DIGIT MAGNANIMOUS NUMBERS                                     */
      DO D12 = 10 TO 99;
         DO D34 = 0 TO 99;
            IF PRIME( D12 + D34 ) THEN DO;
               D123 = ( D12 * 10 ) + ( D34 / 10 );
               D4   = D34 MOD 10;
               IF PRIME( D123 + D4 ) THEN DO;
                  D1   = D12 / 10;
                  D234 = ( ( D12 MOD 10 ) * 100 ) + D34;
                  IF PRIME( D1 + D234 ) THEN DO;
                     IF NOT STORE$MAGNANIMOUS( ( D12 * 100 ) + D34 )
                        THEN RETURN;
                  END;
               END;
            END;
         END;
      END;
      /* 5 DIGIT MAGNANIMOUS NUMBERS UP TO 30$000                        */
      DO D12 = 10 TO 30;
         DO D345 = 0 TO 999;
            IF PRIME( D12 + D345 ) THEN DO;
               D123 = ( D12 * 10 ) + ( D345 / 100 );
               D45  = D345 MOD 100;
               IF PRIME( D123 + D45 ) THEN DO;
                  D1234 = ( D123 * 10 ) + ( D45 / 10 );
                  D5    = D45 MOD 10;
                  IF PRIME( D1234 + D5 ) THEN DO;
                     D1    = D12 / 10;
                     D2345 = ( ( D12 MOD 10 ) * 1000 ) + D345;
                     IF PRIME( D1 + D2345 ) THEN DO;
                        IF NOT STORE$MAGNANIMOUS( ( D12 * 1000 ) + D345 )
                           THEN RETURN;
                     END;
                  END;
               END;
            END;
         END;
      END;
   END FIND$MAGNANIMOUS ;

   CALL FIND$MAGNANIMOUS;
   DO I = 1 TO LAST( MAGNANIMOUS );
      IF I = 1 THEN DO;
         CALL PRINT$STRING( .'MAGNANIMOUS NUMBERS 1-45:$' ); CALL PRINT$NL;
         CALL PRINT$NUMBER( MAGNANIMOUS( I ) );
         END;
      ELSE IF I < 46 THEN DO;
         IF I MOD 15 = 1 THEN CALL PRINT$NL; ELSE CALL PRINT$CHAR( ' ' );
         CALL PRINT$NUMBER( MAGNANIMOUS( I ) );
         END;
      ELSE IF I = 241 THEN DO;
         CALL PRINT$NL;
         CALL PRINT$STRING( .'MAGANIMOUS NUMBERS 241-250:$' ); CALL PRINT$NL;
         CALL PRINT$NUMBER( MAGNANIMOUS( I ) );
         END;
      ELSE IF I > 241 AND I <= 250 THEN DO;
         CALL PRINT$CHAR( ' ' );
         CALL PRINT$NUMBER( MAGNANIMOUS( I ) );
      END;
   END;
   CALL PRINT$NL;
EOF
Output:
MAGNANIMOUS NUMBERS 1-45:
  0   1   2   3   4   5   6   7   8   9  11  12  14  16  20
 21  23  25  29  30  32  34  38  41  43  47  49  50  52  56
 58  61  65  67  70  74  76  83  85  89  92  94  98 101 110
MAGANIMOUS NUMBERS 241-250:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407

Python

""" rosettacode.orgwiki/Magnanimous_numbers """

from sympy import isprime


def is_magnanimous(num):
    """ True is num is a magnanimous number """
    if num < 10:
        return True
    for i in range(1, len(str(num))):
        quo, rem = divmod(num, 10**i)
        if not isprime(quo + rem):
            return False
    return True


if __name__ == '__main__':

    K, MCOUNT = 0, 0
    print('First 45 magnanimous numbers:')
    while MCOUNT < 400:
        if is_magnanimous(K):
            if MCOUNT < 45:
                print(f'{K:4d}', end='\n' if (MCOUNT + 1) % 15 == 0 else '')
            elif MCOUNT == 239:
                print('\n241st through 250th magnanimous numbers:')
            elif 239 < MCOUNT < 250:
                print(f'{K:6d}', end='')
            elif MCOUNT == 389:
                print('\n\n391st through 400th magnanimous numbers:')
            elif 389 < MCOUNT < 400:
                print(f'{K:7d}', end='')
            MCOUNT += 1
        K += 1
Output:
First 45 magnanimous numbers:
   0   1   2   3   4   5   6   7   8   9  11  12  14  16  20
  21  23  25  29  30  32  34  38  41  43  47  49  50  52  56
  58  61  65  67  70  74  76  83  85  89  92  94  98 101 110

241st through 250th magnanimous numbers:
 17992 19972 20209 20261 20861 22061 22201 22801 22885 24407

391st through 400th magnanimous numbers:
 486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

Quackery

isprime is defined at Primality by trial division#Quackery.

  [ 10
    [ 2dup /mod
      over 0 = iff
        [ 2drop true ]
        done
      + isprime not iff
        false done
      10 * again ]
    unrot 2drop ]       is magnanimous ( n --> b )

  [] 0
  [ dup magnanimous
    if [ tuck join swap ]
    1+
    over size 250 =
    until ]
  drop
  say "First 45 magnanimous numbers:" cr
  45 split swap echo cr cr
  say "Magnanimous numbers 241-250:" cr
  -10 split echo cr cr
  drop
Output:
First 45 magnanimous numbers:
[ 0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110 ]

Magnanimous numbers 241-250:
[ 17992 19972 20209 20261 20861 22061 22201 22801 22885 24407 ]

Raku

Works with: Rakudo version 2020.02
my @magnanimous = lazy flat ^10, (10 .. 1001).map( {
    my int $last;
    (1 ..^ .chars).map: -> \c { $last = 1 and last unless (.substr(0,c) + .substr(c)).is-prime }
    next if $last;
    $_
} ),

(1002 .. ∞).map: {
     # optimization for numbers > 1001; First and last digit can not both be even or both be odd
    next if (.substr(0,1) + .substr(*-1)) %% 2;
    my int $last;
    (1 ..^ .chars).map: -> \c { $last = 1 and last unless (.substr(0,c) + .substr(c)).is-prime }
    next if $last;
    $_
}

put 'First 45 magnanimous numbers';
put @magnanimous[^45]».fmt('%3d').batch(15).join: "\n";

put "\n241st through 250th magnanimous numbers";
put @magnanimous[240..249];

put "\n391st through 400th magnanimous numbers";
put @magnanimous[390..399];
Output:
First 45 magnanimous numbers
  0   1   2   3   4   5   6   7   8   9  11  12  14  16  20
 21  23  25  29  30  32  34  38  41  43  47  49  50  52  56
 58  61  65  67  70  74  76  83  85  89  92  94  98 101 110

241st through 250th magnanimous numbers
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407

391st through 400th magnanimous numbers
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

REXX

The majority of the time consumed was in generating a list (sparse array) of suitable primes.
The magna function (magnanimous) was quite simple to code and pretty fast, it includes the 1st and last digit parity test.
By far, the most CPU time was in the generation of primes.

/*REXX pgm finds/displays magnanimous #s  (#s with a inserted + sign to sum to a prime).*/
parse arg bet.1 bet.2 bet.3 highP .              /*obtain optional arguments from the CL*/
if bet.1=='' | bet.1==","  then bet.1=   1..45   /* "      "         "   "   "     "    */
if bet.2=='' | bet.2==","  then bet.2= 241..250  /* "      "         "   "   "     "    */
if bet.3=='' | bet.3==","  then bet.3= 391..400  /* "      "         "   "   "     "    */
if highP=='' | highP==","  then highP=  1000000  /* "      "         "   "   "     "    */
call genP                                        /*gen primes up to  highP  (1 million).*/

     do j=1  for 3                               /*process three magnanimous "ranges".  */
     parse var   bet.j   LO  '..'  HI            /*obtain the first range (if any).     */
     if HI==''  then HI= LO                      /*Just a single number?   Then use LO. */
     if HI==0   then iterate                     /*Is HI a zero?   Then skip this range.*/
     finds= 0;                             $=    /*#:  magnanimous # cnt;  $:  is a list*/
                do k=0  until finds==HI          /* [↓]  traipse through the number(s). */
                if \magna(k)  then iterate       /*Not magnanimous?  Then skip this num.*/
                finds= finds + 1                 /*bump the magnanimous number count.   */
                if finds>=LO  then $= $ k        /*In range►  Then add number ──► $ list*/
                end   /*k*/
     say
     say center(' 'LO       "──►"       HI       'magnanimous numbers ',  126, "─")
     say strip($)
     end        /*j*/
exit 0                                           /*stick a fork in it,  we're all done. */
/*──────────────────────────────────────────────────────────────────────────────────────*/
magna: procedure expose @. !.; parse arg x 1 L 2 '' -1 R  /*obtain #,  1st & last digit.*/
       len= length(x);       if len==1  then return 1     /*one digit #s are magnanimous*/
       if x>1001  then if L//2 == R//2  then return 0     /*Has parity?  Not magnanimous*/
                do  s= 1  for  len-1                      /*traipse thru #, inserting + */
                parse var  x   y  +(s)  z;   sum= y + z   /*parse 2 parts of #, sum 'em.*/
                if !.sum  then iterate                    /*Is sum prime? So far so good*/
                          else return 0                   /*Nope?  Then not magnanimous.*/
                end   /*s*/
       return 1                                  /*Pass all the tests, it's magnanimous.*/
/*──────────────────────────────────────────────────────────────────────────────────────*/
genP: @.1=2; @.2=3; @.3=5; @.4=7; @.5=11; @.6=13   /*assign low primes; # primes.*/
      !.= 0; !.2=1; !.3=1; !.5=1; !.7=1; !.11=1; !.13=1   /*   "   semaphores to   "    */
                           #= 6;  sq.#= @.# ** 2          /*# primes so far;  P squared.*/
        do j=@.#+4  by 2  to highP; parse var j '' -1 _; if _==5  then iterate /*÷ by 5?*/
        if j// 3==0  then iterate;   if j// 7==0  then iterate    /*÷ by 3?;     ÷ by 7?*/
        if j//11==0  then iterate                                 /*"  " 11?     " " 13?*/
                do k=6  while sq.k<=j            /*divide by some generated odd primes. */
                if j//@.k==0  then iterate j     /*Is J divisible by  P?  Then not prime*/
                end   /*k*/                      /* [↓]  a prime  (J)  has been found.  */
        #= #+1;   @.#= j;   sq.#= j*j;   !.j= 1  /*bump #Ps; P──►@.assign P; P^2; P flag*/
        end     /*j*/;                 return
output   when using the default inputs:
──────────────────────────────────────────────── 1 ──► 45 magnanimous numbers ────────────────────────────────────────────────
0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110
and took 0.00 seconds.


────────────────────────────────────────────── 241 ──► 250 magnanimous numbers ───────────────────────────────────────────────
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407
and took 0.31 seconds.


────────────────────────────────────────────── 391 ──► 400 magnanimous numbers ───────────────────────────────────────────────
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

Ring

load "stdlib.ring"
n = -1
sum = 0
magn = []

while sum < 45
      n = n + 1
      if n < 10
         add(magn,n)
         sum = sum + 1
      else   
         nStr = string(n)
         check = 0
         for m = 1 to len(nStr)-1
             nr1 = number(left(nStr,m))
             nr2 = number(right(nStr,len(nStr)-m))
             nr3 = nr1 + nr2
             if not isprime(nr3)
                check = 1
             ok
          next
          if check = 0
             add(magn,n)
             sum = sum + 1
          ok
       ok
end

see "Magnanimous numbers 1-45:" + nl
showArray(magn)

n = -1
sum = 0
magn = []

while sum < 250
      n = n + 1
      if n < 10
         sum = sum + 1
      else   
         nStr = string(n)
         check = 0
         for m = 1 to len(nStr)-1
             nr1 = number(left(nStr,m))
             nr2 = number(right(nStr,len(nStr)-m))
             nr3 = nr1 + nr2
             if not isprime(nr3)
                check = 1
             ok
          next 
          if check = 0
             sum = sum + 1
          ok
          if check = 0 and sum > 240 and sum < 251
             add(magn,n)
          ok
       ok       
end

see nl
see "Magnanimous numbers 241-250:" + nl
showArray(magn)

func showArray array
     txt = ""
     see "["
     for n = 1 to len(array)
         txt = txt + array[n] + ","
     next
     txt = left(txt,len(txt)-1)
     txt = txt + "]"
     see txt
Magnanimous numbers 1-45:
[0,1,2,3,4,5,6,7,8,9,11,12,14,16,20,21,23,25,29,30,32,34,38,41,43,47,49,50,52,56,58,61,65,67,70,74,76,83,85,89,92,94,98,101,110]

Magnanimous numbers 241-250:
[17992,19972,20209,20261,20861,22061,22201,22801,22885,24407]

RPL

Works with: Halcyon Calc version 4.2.7
RPL code Comment
 ≪ 
   DUP2 1 SWAP SUB "+" + ROT ROT 
   1 + OVER SIZE SUB + STR→ EVAL 
≫ ‘InsertPlus’ STO

≪ 
  "'" SWAP →STR OVER + + DUP SIZE → str len 
  ≪ 2 SF 2 len 2 - FOR j 
        str j InsertPlus
       IF PRIM? NOT THEN 2 CF len 'j' STO END 
     NEXT 
     2 FS? 
≫ ≫ ‘MAGN?’ STO

≪ → n 
  ≪ { 0 1 2 3 4 5 6 7 8 9 } 10 
     WHILE OVER SIZE n < REPEAT 
       IF DUP MAGN? THEN SWAP OVER + SWAP END 
        1 + 
     END DROP 
≫ ≫ ‘MAGLST’ STO

≪   
 DO 1 + UNTIL DUP MAGN? END 
≫ ‘NXMAGN’ STO  
InsertPlus ( "'####'" pos  --  sum )
 insert a plus sign in the string
 evaluate the expression


MAGN? ( "'####'" pos  --  sum )
turn ### into "'###'"
 for each possibility
   add digits
   if not a prime,  clear flag 2 and exit the loop 




MAGLST ( n  --  { M(1)..M(n) } )







NXMAGN ( x  --  next_M(n) )


Input:
45 MAGLST
17752 NXMAGN NXMAGN NXMAGN NXMAGN NXMAGN NXMAGN NXMAGN NXMAGN NXMAGN NXMAGN
Output:
11: { 0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110 }
10: 17992
9:  19972
8:  20209
7:  20261
6:  20861
5:  22061
4:  22201
3:  22801
2:  22885
1:  24407

Ruby

Translation of: Sidef
require "prime"

magnanimouses = Enumerator.new do |y|
  (0..).each {|n| y << n if (1..n.digits.size-1).all? {|k| n.divmod(10**k).sum.prime?} }
end

puts "First 45 magnanimous numbers:"
puts magnanimouses.first(45).join(' ')
 
puts "\n241st through 250th magnanimous numbers:"
puts magnanimouses.first(250).last(10).join(' ')
 
puts "\n391st through 400th magnanimous numbers:"
puts magnanimouses.first(400).last(10).join(' ')
Output:
First 45 magnanimous numbers:
0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110

241st through 250th magnanimous numbers:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407

391st through 400th magnanimous numbers:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

Rust

fn is_prime(n: u32) -> bool {
    if n < 2 {
        return false;
    }
    if n % 2 == 0 {
        return n == 2;
    }
    if n % 3 == 0 {
        return n == 3;
    }
    let mut p = 5;
    while p * p <= n {
        if n % p == 0 {
            return false;
        }
        p += 2;
        if n % p == 0 {
            return false;
        }
        p += 4;
    }
    true
}

fn is_magnanimous(n: u32) -> bool {
    let mut p: u32 = 10;
    while n >= p {
        if !is_prime(n % p + n / p) {
            return false;
        }
        p *= 10;
    }
    true
}

fn main() {
    let mut m = (0..).filter(|x| is_magnanimous(*x)).take(400);
    println!("First 45 magnanimous numbers:");
    for (i, n) in m.by_ref().take(45).enumerate() {
        if i > 0 && i % 15 == 0 {
            println!();
        }
        print!("{:3} ", n);
    }
    println!("\n\n241st through 250th magnanimous numbers:");
    for n in m.by_ref().skip(195).take(10) {
        print!("{} ", n);
    }
    println!("\n\n391st through 400th magnanimous numbers:");
    for n in m.by_ref().skip(140) {
        print!("{} ", n);
    }
    println!();
}
Output:
First 45 magnanimous numbers:
  0   1   2   3   4   5   6   7   8   9  11  12  14  16  20 
 21  23  25  29  30  32  34  38  41  43  47  49  50  52  56 
 58  61  65  67  70  74  76  83  85  89  92  94  98 101 110 

241st through 250th magnanimous numbers:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407 

391st through 400th magnanimous numbers:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081 

SETL

program magnanimous;
    n := -1;
    loop for i in [1..400] do
        loop until magnanimous(n) do n +:= 1; end loop;
        
        case i of
            (1): print("1 - 45:");
            (241): print; print("241 - 250:");
            (391): print; print("391 - 400:");
        end case;
        
        if i in [1..45] or i in [241..250] or i in [391..400] then 
            putchar(lpad(str n, 7));
            if i mod 5 = 0 then print; end if;
        end if;
    end loop;

    proc magnanimous(n);
        return forall k in splitsums(n) | prime(k);
    end proc;

    proc splitsums(n);
        s := str n;
        return [val s(..i) + val s(i+1..) : i in [1..#s-1]];
    end proc;
    
    proc prime(n);
        if n<2 then return false;
        elseif even n then return(n = 2);
        elseif n mod 3=0 then return(n = 3);
        else
            d := 5;
            loop while d*d <= n do
                if n mod d=0 then return false; end if;
                d +:= 2;
                if n mod d=0 then return false; end if;
                d +:= 4;
            end loop;
            return true;
        end if;
    end proc;
end program;
Output:
1 - 45:
      0      1      2      3      4
      5      6      7      8      9
     11     12     14     16     20
     21     23     25     29     30
     32     34     38     41     43
     47     49     50     52     56
     58     61     65     67     70
     74     76     83     85     89
     92     94     98    101    110

241 - 250:
  17992  19972  20209  20261  20861
  22061  22201  22801  22885  24407

391 - 400:
 486685 488489 515116 533176 551558
 559952 595592 595598 600881 602081

Sidef

func is_magnanimous(n) {
    1..n.ilog10 -> all {|k|
        sum(divmod(n, k.ipow10)).is_prime
    }
}

say "First 45 magnanimous numbers:"
say is_magnanimous.first(45).join(' ')

say "\n241st through 250th magnanimous numbers:"
say is_magnanimous.first(250).last(10).join(' ')

say "\n391st through 400th magnanimous numbers:"
say is_magnanimous.first(400).last(10).join(' ')
Output:
First 45 magnanimous numbers:
0 1 2 3 4 5 6 7 8 9 11 12 14 16 20 21 23 25 29 30 32 34 38 41 43 47 49 50 52 56 58 61 65 67 70 74 76 83 85 89 92 94 98 101 110

241st through 250th magnanimous numbers:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407

391st through 400th magnanimous numbers:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081

Swift

Translation of: Rust
import Foundation

func isPrime(_ n: Int) -> Bool {
    if n < 2 {
        return false
    }
    if n % 2 == 0 {
        return n == 2
    }
    if n % 3 == 0 {
        return n == 3
    }
    var p = 5
    while p * p <= n {
        if n % p == 0 {
            return false
        }
        p += 2
        if n % p == 0 {
            return false
        }
        p += 4
    }
    return true
}

func isMagnanimous(_ n: Int) -> Bool {
    var p = 10;
    while n >= p {
        if !isPrime(n % p + n / p) {
            return false
        }
        p *= 10
    }
    return true
}

let m = (0...).lazy.filter{isMagnanimous($0)}.prefix(400);
print("First 45 magnanimous numbers:");
for (i, n) in m.prefix(45).enumerated() {
    if i > 0 && i % 15 == 0 {
        print()
    }
    print(String(format: "%3d", n), terminator: " ")
}
print("\n\n241st through 250th magnanimous numbers:");
for n in m.dropFirst(240).prefix(10) {
    print(n, terminator: " ")
}
print("\n\n391st through 400th magnanimous numbers:");
for n in m.dropFirst(390) {
    print(n, terminator: " ")
}
print()
Output:
First 45 magnanimous numbers:
  0   1   2   3   4   5   6   7   8   9  11  12  14  16  20 
 21  23  25  29  30  32  34  38  41  43  47  49  50  52  56 
 58  61  65  67  70  74  76  83  85  89  92  94  98 101 110 

241st through 250th magnanimous numbers:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407 

391st through 400th magnanimous numbers:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081 

Visual Basic .NET

Translation of: C#
Imports System, System.Console

Module Module1

    Dim np As Boolean()

    Sub ms(ByVal lmt As Long)
        np = New Boolean(CInt(lmt)) {} : np(0) = True : np(1) = True
        Dim n As Integer = 2, j As Integer = 1 : While n < lmt
            If Not np(n) Then
                Dim k As Long = CLng(n) * n
                While k < lmt : np(CInt(k)) = True : k += n : End While
            End If : n += j : j = 2 : End While
    End Sub

    Function is_Mag(ByVal n As Integer) As Boolean
        Dim res, rm As Integer, p As Integer = 10
        While n >= p
            res = Math.DivRem(n, p, rm)
            If np(res + rm) Then Return False
            p = p * 10 : End While : Return True
    End Function

    Sub Main(ByVal args As String())
        ms(100_009) : Dim mn As String = " magnanimous numbers:"
        WriteLine("First 45{0}", mn) : Dim l As Integer = 0, c As Integer = 0
        While c < 400 : If is_Mag(l) Then
            c += 1 : If c <= 45 OrElse (c > 240 AndAlso c <= 250) OrElse c > 390 Then Write(If(c <= 45, "{0,4} ", "{0,8:n0} "), l)
            If c < 45 AndAlso c Mod 15 = 0 Then WriteLine()
            If c = 240 Then WriteLine(vbLf & vbLf & "241st through 250th{0}", mn)
            If c = 390 Then WriteLine(vbLf & vbLf & "391st through 400th{0}", mn)
        End If : l += 1 : End While
    End Sub
End Module
Output:
First 45 magnanimous numbers:
   0    1    2    3    4    5    6    7    8    9   11   12   14   16   20 
  21   23   25   29   30   32   34   38   41   43   47   49   50   52   56 
  58   61   65   67   70   74   76   83   85   89   92   94   98  101  110 

241st through 250th magnanimous numbers:
  17,992   19,972   20,209   20,261   20,861   22,061   22,201   22,801   22,885   24,407 

391st through 400th magnanimous numbers:
 486,685  488,489  515,116  533,176  551,558  559,952  595,592  595,598  600,881  602,081 

Wren

Library: Wren-fmt
Library: Wren-math
Translation of: Go
import "./fmt" for Conv, Fmt
import "./math" for Int
  
var isMagnanimous = Fn.new { |n|
    if (n < 10) return true
    var p = 10
    while (true) {
        var q = (n/p).floor
        var r = n % p
        if (!Int.isPrime(q + r)) return false
        if (q < 10) break
        p = p * 10
    }
    return true
}
 
var listMags = Fn.new { |from, thru, digs, perLine|
    if (from < 2) {
        System.print("\nFirst %(thru) magnanimous numbers:")
    } else {
        System.print("\n%(Conv.ord(from)) through %(Conv.ord(thru)) magnanimous numbers:")
    }
    var i = 0
    var c = 0
    while (c < thru) {
        if (isMagnanimous.call(i)) {
            c = c + 1
            if (c >= from) {
                System.write(Fmt.d(digs, i) + " ")
                if (c % perLine == 0) System.print()
            }
        }
        i = i + 1
    }
}
 
listMags.call(1, 45, 3, 15)
listMags.call(241, 250, 1, 10)
listMags.call(391, 400, 1, 10)
Output:
First 45 magnanimous numbers:
  0   1   2   3   4   5   6   7   8   9  11  12  14  16  20 
 21  23  25  29  30  32  34  38  41  43  47  49  50  52  56 
 58  61  65  67  70  74  76  83  85  89  92  94  98 101 110 

241st through 250th magnanimous numbers:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407 

391st through 400th magnanimous numbers:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081 

XPL0

func IsPrime(N);        \Return 'true' if N is prime
int  N, I;
[if N <= 2 then return N = 2;
if (N&1) = 0 then \even >2\ return false;
for I:= 3 to sqrt(N) do
    [if rem(N/I) = 0 then return false;
    I:= I+1;
    ];
return true;
];

func Magnan(N);         \Return 'true' if N is a magnanimous number
int  N, M, P;
[M:= 0;  P:= 1;
loop    [N:= N/10;
        if N = 0 then return true;
        M:= P*rem(0) + M;
        P:= P*10;
        if not IsPrime(N+M) then return false;
        ];
];

int Cnt, N;
[Cnt:= 0;  N:= 0;
Text(0, "First 45 magnanimous numbers:^m^j");
loop    [if N < 10 or Magnan(N) then
            [Cnt:= Cnt+1;
            if Cnt <= 45 then
                [Format(4, 0);
                RlOut(0, float(N));
                if rem(Cnt/15) = 0 then CrLf(0);
                ];
            if Cnt = 241 then
                Text(0, "^m^j241st through 250th magnanimous numbers:^m^j");
            if Cnt >= 241 and Cnt <= 250 then
                [IntOut(0, N);  ChOut(0, ^ )];
            if Cnt = 391 then
                Text(0, "^m^j^j391st through 400th magnanimous numbers:^m^j");
            if Cnt >= 391 and Cnt <= 400 then
                [IntOut(0, N);  ChOut(0, ^ )];
            if Cnt >= 400 then quit;
                ];
        N:= N+1;
        ];
]
Output:
First 45 magnanimous numbers:
   0   1   2   3   4   5   6   7   8   9  11  12  14  16  20
  21  23  25  29  30  32  34  38  41  43  47  49  50  52  56
  58  61  65  67  70  74  76  83  85  89  92  94  98 101 110

241st through 250th magnanimous numbers:
17992 19972 20209 20261 20861 22061 22201 22801 22885 24407 

391st through 400th magnanimous numbers:
486685 488489 515116 533176 551558 559952 595592 595598 600881 602081