using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Please inter two nums to write all Prime nums between them.");

        Console.WriteLine("a = ");

        int a = int.Parse(Console.ReadLine());

        Console.WriteLine("b = ");

        int b = int.Parse(Console.ReadLine());

        bool isPrime = true;

        for(int i=a; i<b; i++)

        {

            isPrime = true;

            for(int j=2; j<i; j++)

            {

                if(i%j==0)

                {

                    isPrime = false;

                    break;

                }               

            }

            if(isPrime==true)

            {

                Console.WriteLine(i);

            }

        }

        Console.ReadKey();

    }

}