Find the largest prime number factor?

Question

I need to find The prime factors of 13195 are 5, 7, 13 and 29. / * Largest is 377. * / What is the largest prime factor of the number 600851475143 ?

#include<         


        

Answer 1

You need to add an L as suffix to a number that overflow MAX INT, so this line:

long value, large = 600851475143;

Should be:

long value, large = 600851475143L;
//                              ^