Primes which contain only one odd digit: Difference between revisions
Primes which contain only one odd digit (view source)
Revision as of 10:45, 13 January 2022
, 2 years agoAdded 11l
Alextretyak (talk | contribs) m (Small fix of Nim solution) |
Alextretyak (talk | contribs) (Added 11l) |
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Show on this page only the <u>count</u> of those primes under '''1,000,000''' which when expressed in decimal contains only one odd digit.
<br><br>
=={{header|11l}}==
{{trans|Nim}}
<lang 11l>F is_prime(n)
I n == 2
R 1B
I n < 2 | n % 2 == 0
R 0B
L(i) (3 .. Int(sqrt(n))).step(2)
I n % i == 0
R 0B
R 1B
F hasLastDigitOdd(=n)
n I/= 10
L n != 0
I ((n % 10) [&] 1) != 0
R 0B
n I/= 10
R 1B
V l = (1.<1000).step(2).filter(n -> hasLastDigitOdd(n) & is_prime(n))
print(‘Found ’l.len‘ primes with only one odd digit below 1000:’)
L(n) l
V i = L.index
print(‘#3’.format(n), end' I (i + 1) % 9 == 0 {"\n"} E ‘ ’)
V count = 0
L(n) (1.<1'000'000).step(2)
I hasLastDigitOdd(n) & is_prime(n)
count++
print("\nFound "count‘ primes with only one odd digit below 1000000.’)</lang>
{{out}}
<pre>
Found 45 primes with only one odd digit below 1000:
3 5 7 23 29 41 43 47 61
67 83 89 223 227 229 241 263 269
281 283 401 409 421 443 449 461 463
467 487 601 607 641 643 647 661 683
809 821 823 827 829 863 881 883 887
Found 2560 primes with only one odd digit below 1000000.
</pre>
=={{header|Action!}}==
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