Ultra useful primes: Difference between revisions
Content added Content deleted
(Created Nim solution.) |
(→{{header|J}}: redo for j9.4 which fixes arbitrary precision performance problems) |
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<syntaxhighlight lang="j">uup=: {{ |
<syntaxhighlight lang="j">uup=: {{ |
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ref=. 2x^2^y+1 |
ref=. x: 2x^2^y+1 |
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k=. 1 |
k=. 1 |
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while. -. 1 p: ref-k do. k=. k+2 end. |
while. -. 1 p: ref-k do. k=. k+2 end. |
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I don't have the patience to get this little laptop to compute the first 10 such elements, so here I only show the first five: |
I don't have the patience to get this little laptop to compute the first 10 such elements, so here I only show the first five: |
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<syntaxhighlight lang="j"> uup i. |
<syntaxhighlight lang="j"> uup i.10 |
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1 3 5 15 5 |
1 3 5 15 5 9 3 299 361 43 |
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timespacex'uup i.10' |
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0.845778 2680</syntaxhighlight> |
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=={{header|Julia}}== |
=={{header|Julia}}== |
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