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Re^2: Prime Number Finder

by hv (Parson)
on Nov 11, 2005 at 14:59 UTC ( #507726=note: print w/replies, xml ) Need Help??


in reply to Re: Prime Number Finder
in thread Prime Number Finder

Even if you had a quantum computer to run it on, I'm not convinced you'd have an O(1) algorithm unless you also have O(1) algorithms for computing sqrt($n) and 2..$n.

In any case however the algorithm will give the wrong answer for 2. You can fix that by replacing sqrt($n)+1 with sqrt($n+1).

Hugo

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