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Search options not deleted user 179213

When the code scales so poorly in the face of large inputs that it cannot complete in a reasonable amount of time, use this instead of the [performance] tag.

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Largest prime factor function

I have written a function which finds the largest prime factor of some number. This function works but the problem is that it is too slow. For instance, when I enter 600851475143 as a parameter, the p …
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