#include <stdio.h>

 

int main()

{

  int i, N, count; 

  

  for(N = 1; N <= 100; N++)

  {

    count = 0;

    for (i = 2; i <= N/2; i++)

    {

  	if(N%i == 0)

  	{

     	  count++;

  	  break;

	}

    }

    if(count == 0 && N != 1 )

    {

	printf(" %d ", N);

    }  

  }

  return 0;

}