Project Euler 3 Largest prime factor

python6

Largest prime factor

The prime factors of 13195 are 5, 7, 13 and 29.

What is the largest prime factor of the number 600851475143 ?

python:

n = 600851475143
i = 2
l = []
while i<=n:
        if n%i==0:
                while n%i==0:
                        n=n//i
                l.append(i)
        i+=1
print(l)
print(l[-1])

[71, 839, 1471, 6857]
6857