Finding prime factors

Question

#include 
using namespace std;

void whosprime(long long x)
{
    bool imPrime = true;

    for(int i = 1; i <= x; i++)
    {
        for(int z =          


        

Answer 1

600851475143 is outside of the range of an int

void whosprime(int x) //<-----fix heere ok?
{
    bool imPrime = true;

    for(int i = 1; i <= x; i++)
    {... 
      ...