#include <stdio.h>
#include <math.h>
int isprime ( int n )
{
int m;
int sqrt_n = sqrt(n);
for (m = 2; m <= sqrt_n+1; m++) // +1 in case of obscure rounding error
if ((n % m) == 0) return 0;
return 1;
}
int main ( int argc, char** argv )
{
int i;
for (i = 79000; i < 81000; i++)
if (isprime(i)) { printf ( "%d ", i ); fflush(stdout); }
return 0;
}