using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication22
{
    class Program
    {
        static void Main(string[] args)
        {
            int a;
            int b;
            bool isPrime;


            Console.WriteLine("Enter a number: ");
            a = Convert.ToInt32(Console.ReadLine());


            Console.WriteLine("Now enter a second number: ");
            b = Convert.ToInt32(Console.ReadLine());

            //Console.WriteLine(a + " and " + b);

            if (x = 2; x < a; x++)
            {
                for (int y = 1; y < x; y++)
                {
                    if (x % y == 0)
                {
                    isPrime = true;
                }
                    if (isPrime = false)
                    {
                        break;
                    }
                }
            }
            if (isPrime = false)
            {
                Console.WriteLine(x);
                isPrime = true;
            }

        }
    }
}