using System;

public class Program

{

    public static void Main()

    {

        bool isPRIME = true;

        for(int num =2; num<1000; num++) {

            isPRIME = true;

            for(int div= 2; div < num; div++) {

                if(num % div ==0) {

                    isPRIME = false;

                }

            }

            if(isPRIME) Console.WriteLine(num);

        }

    }

}