import java.util.Scanner;

public class Demo2
{
    // Print all prime numbers <= 100
    public static void main(String[] args)
    {
        int i;
        
        for ( i = 2; i <= 100; i++ )
            if ( isNumberPrime(i) )
                System.out.print(i + " ");

        System.out.println();
    }

    public static boolean isNumberPrime(int num)
    {
      boolean isPrime = true;
      int i;

      for ( i = 2; i < num; i++ )
      {
          if ( num%i == 0 )
          {
             isPrime = false;
             break;
          }     
      }

      return(isPrime); // Return the value
    }
}