Least m such that n! + m is prime: Difference between revisions
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→{{header|Raku}}: clarify
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my @least-m = lazy (^∞).hyper(:2batch).map: {(1..*).first: -> \n {(@f[$_] + n).is-prime}};
say "Least positive m such that n! + m is prime; first fifty:\n"
~ @least-m[^50].batch(10)».fmt("%3d").join: "\n";
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}</syntaxhighlight>
{{out}}
<pre>Least positive m such that n! + m is prime; first fifty:
1 1 1 1 5 7 7 11 23 17
11 1 29 67 19 43 23 31 37 89
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