using System;

// Marlen Melchor Hernández         

public class Program

{

    public static void Main()

    {

        int number = 6;

        switch (number) {

            case 6:

                Console.WriteLine("The number is not prime!");

                break;

            case 7:

                Console.WriteLine("The number is prime!");

                break;

            default:

                Console.WriteLine("Uknown number!");

                break;

        }

    }

}