Hello all. I know there is a stupidly easy algorithm to find the prime decompision of a number (i.e. 2*2*2*3*5 is the p.d. of 120) but I can't for the life of me remember it. I need to do this operation on incredibly large numbers (~500 digits) so the naieve way of just starting at 2 and proceding through the primes *PROBABLY* doesn't work (if it does -- please tell me!) but I know there is a less naieve but still simplistic algorithm. Anyone out there know it?