Reverse factorial

Posted by dada on Stack Overflow See other posts from Stack Overflow or by dada
Published on 2010-04-16T11:35:02Z Indexed on 2010/04/16 11:43 UTC
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math

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algorithm

Well, we all know that if N is given it's easy to calculate N!. But what about reversing?

N! is given and you are about to find N - Is that possible ? I'm curious.

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