#include <iostream>
#include <stdint.h>
using namespace std;

int main()
{
    uint64_t number = 6008514753143;


    for(uint64_t i = number/2;i>7;i--)
    {
        if(number%i == 0)
        {
            if(i%2!=0 && i%3!=0 && i%5!=0 && i%7!=0)
            {
                cout << i << endl;
                return 0;
            }
        }
   }


   return 0;
}