6 lines
211 B
Text
6 lines
211 B
Text
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IsPrime[n_Integer] := Block[{},
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If[n <= 1, Return[False]];
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If[n == 2, Return[True]]; If[Mod[n, 2] == 0, Return[False]];
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For[k = 3, k <= Sqrt[n], k += 2, If[Mod[n, k] == 0, Return[False]]];
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Return[True]]
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