Wagstaff primes: Difference between revisions
m
→{{header|Wren}}: Changed to Wren S/H
(Added Gambas) |
m (→{{header|Wren}}: Changed to Wren S/H) |
||
| (6 intermediate revisions by 5 users not shown) | |||
Line 191:
n: ~"|n|"
s: size n
if s > 20 -> n: ((take n 10)++"...")++drop
n ++ ~" (|s| digits)"
]
Line 347:
using big_int = mpz_class;
std::string to_string(const big_int& num, size_t
std::string str = num.get_str();
size_t len = str.size();
if (len >
str += " (";
str += std::to_string(len);
Line 401:
23: 3539 - 737960982013072...304686486497963 (1065 digits)
24: 5807 - 401849623734300...466686663568043 (1748 digits)
</pre>
=={{header|Craft Basic}}==
<syntaxhighlight lang="basic">'Craft Basic may only calculate up to 9
let n = 9
let p = 1
do
let p = p + 2
if prime(p) then
let w = (2 ^ p + 1) / 3
if prime(w) then
let c = c + 1
print tab, c, tab, p, tab, w
endif
endif
title p
wait
loop c < n</syntaxhighlight>
{{out}}
<pre>
1 3 3
2 5 11
3 7 43
4 11 683
5 13 2731
6 17 43691
7 19 174763
8 23 2796203
9 31 715827883
</pre>
Line 456 ⟶ 496:
<syntaxhighlight lang="easylang">
r = 0▼
.▼
break 1▼
.
while
if
.
.
.
pri = 1
while nwag <> 10
pri += 2
▲ if r = 1
wag = (pow 2 pri + 1) / 3
nwag += 1
print pri & " => " & wag
Line 488 ⟶ 521:
.
</syntaxhighlight>
=={{header|F_Sharp|F#}}==
Line 1,154 ⟶ 1,186:
24: 5807 => [1748 digit number]
</pre>
=={{header|Quackery}}==
<code>from</code>, <code>index</code>, <code>incr</code>, and <code>end</code> are defined at [[Loops/Increment loop index within loop body#Quackery]].
<code>prime</code> is defined at [[Miller–Rabin primality test#Quackery]].
<syntaxhighlight lang="Quackery"> [ bit 1+ 3 / ] is wagstaff ( n --> n )
[] 3 from
index prime while
index wagstaff prime while
dup size 24 = if end ]
10 split swap
witheach
[ dup say "p = " echo
say ", w(p) = " echo cr ]
witheach
[ say "p = " echo cr ]
</syntaxhighlight>
{{out}}
<pre>p = 3, w(p) = 3
p = 5, w(p) = 11
p = 7, w(p) = 43
p = 11, w(p) = 683
p = 13, w(p) = 2731
p = 17, w(p) = 43691
p = 19, w(p) = 174763
p = 23, w(p) = 2796203
p = 31, w(p) = 715827883
p = 43, w(p) = 2932031007403
p = 61
p = 79
p = 101
p = 127
p = 167
p = 191
p = 199
p = 313
p = 347
p = 701
p = 1709
p = 2617
p = 3539
p = 5807</pre>
=={{header|Raku}}==
Line 1,276 ⟶ 1,358:
Even so, as far as the stretch goal is concerned, takes around 25 seconds to find the next 14 Wagstaff primes but almost 10 minutes to find the next 19 on my machine (Core i7). I gave up after that.
<syntaxhighlight lang="
import "./gmp" for Mpz
import "./fmt" for Fmt
| |||