Prime factor of 300 000 000 000?

Question

I need to find out the prime factors of over 300 billion. I have a function that is adding to the list of them...very slowly! It has been running for about an hour now and i

Answer 1

One last thing nobody has mentioned, perhaps because it seems obvious. Every time you find a factor and divide it out, keep trying the factor until it fails.

64 only has one prime factor, 2. You will find that out pretty trivially if you keep dividing out the 2 until you can't anymore.