Stuck on Project Euler #3 in python

Question

The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number 600851475143 ?

Ok, so i am working on projec

Answer 1

i = 3
factor = []
number = 600851475143
while i * i <= number:
    if number % i != 0:
        i += 2
    else:
        number /= i
        factor.append(i)
while number >= i:
    if number % i != 0:
        i += 2
    else:
        number /= i
        factor.append(i)
print(max(factor))