Thread: timeout compilation error... please help me how to get rid of this error

Code:

//to find the largest prime factor of the number i = 600851475143




#include<stdio.h>


unsigned long long prime(unsigned long long j);
unsigned long long max=1;


int main()
{
 unsigned long long i= 600851475143 ,j ;
 for(j = 2;j<i/2 ; j++)
 {
    if(i%j==0)
	max= prime(j);
		  }
  printf("%llu",max);
  
  return 0;
}


  unsigned long long prime(unsigned long long j)
  {unsigned long long a;
	for(a=2;a<j/2;a++)
	{
	 if(j%a==0)
	 return max;
	 }
	 return j;
	 }

Run this program, and see if your unsigned long long int system maximum, is large enough to handle the value of i in your program.

Code:

#include <stdio.h>
#include <limits.h>

int main(void) {
   printf("%llu\n",ULLONG_MAX);
   return 0;
}

Your code will run very slowly, but that can be fixed later. First things first.