Prime Number

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string doseArithmo;
            int arithmos;
            Arxh:
            int count = 0;

            Console.WriteLine("Dose enan arithmo");
            doseArithmo = Console.ReadLine();
            arithmos = int.Parse(doseArithmo);

            for (int i = 2; i < arithmos; i++)
            {
                if (arithmos % i == 0)
                {
                    count = count + 1;
                }
            }

            if (count < 1)
            {
                Console.WriteLine("O arithmos {0} einai protos", arithmos);
            }
            else
            {
                Console.WriteLine("O arithmos {0} den einai protos", arithmos);
            }


            goto Arxh;
        }
    }
}