Python recursive program to prime factorize a number

Question

I wrote the following program to prime factorize a number:

import math
def prime_factorize(x,li=[]):
    until = int(math.sqrt(x))+1
    for i in xrange(2,until)         


        

Answer 1

def primeFactorization(n):
    """ Return the prime factors of the given number. """
    factors = []
    lastresult = n
    while 1:
        if lastresult == 1:
            break

        c = 2

        while 1:
            if lastresult % c == 0:
                break

            c += 1

        factors.append(c)
        lastresult /= c

    return factors

is it fine.