Python/project_euler/problem_03/sol2.py
2019-02-10 00:35:52 +08:00

19 lines
364 B
Python

'''
Problem:
The prime factors of 13195 are 5,7,13 and 29. What is the largest prime factor of a given number N?
e.g. for 10, largest prime factor = 5. For 17, largest prime factor = 17.
'''
from __future__ import print_function
n=int(input())
prime=1
i=2
while(i*i<=n):
while(n%i==0):
prime=i
n//=i
i+=1
if(n>1):
prime=n
print(prime)