#include<stdio.h>
int judge(int x)
{
int i ;
if (x == 2) return 1 ;
for (i = 2 ; i * i <= x ; i++)
{
if (x % i == 0) return 0 ;
}
return 1 ;
}
int main()
{
int count = 0 ;
long int x = 2 ;
while (count != 100002)
{
if(judge(x) == 1) count++ ;
x++ ;
}
printf("%Ld" , x-1) ;
return 0 ;
}
