using System;

public class Program

{

    static bool isPrime(int x) {

        // bool is a boolean type that has value of true/false

        // please implement this method

        int count = 0;

        for(int i = 2 ; i <= x ; i++){

            if(x % i == 0){

                count++;

            }

        }

        if (count == 1){    

            return true;

        }

        else return false;

    }

    public static void Main()

    {

        int x = 2;

        Console.WriteLine("{0}\n", x);

        for (x = 3; x < 500; x++){

            if (isPrime(x) == true){

                Console.WriteLine("{0}\n", x);

            }

        }

        // please implement this program        

    }

}