Hi All.

Im not actually at high school, im at college but i felt this is at high school level. I'm doing a Web Development degree at uni next work and need to brush up on my algebra.

First of all i understand how to do Prime Factorization with integers, eg: Find PF of 459:

Code:

459/3
153/3
51/3
17
459 = 3 x 3 x 3 x 17 (dont know how to right exponents on this forum)

What about when working with floating point (decimal)? Does PF Only work with integers?

Also last question, is it appropriate to use a calculator when trying to find the PF on a number? Without a calculator the process takes a while, when doing exams would i be expected to use a calculator when trying to find the PF of a number with more then 5 digits?

Thanks