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Re: Find prime number between 1 to 1000000

by si_lence (Deacon)
on Jul 29, 2009 at 14:18 UTC ( #784241=note: print w/replies, xml ) Need Help??

in reply to Find prime number between 1 to 1000000

If you need to check a lot of numbers it might be efficient to precalculate all primes and load them in memory. Then check against this list.
cheers, si_lence
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