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

namespace _07.Primes_in_Given_Range
{
    class Program
    {
        static void Main(string[] args)
        {
            var startNum = long.Parse(Console.ReadLine());
            var endNum = long.Parse(Console.ReadLine());
            var primeList = " ";
            //IsPrime(startNum, endNum, primeList);
        }

        static void IsPrime(long startNum, long endNum, string primeList)
        {
            for (long i = startNum; i <= endNum; i++)
            {
                var prime = true;

                if (i <= 1)
                {
                    prime = false;
                }

                for (var j = 2; j <= Math.Sqrt(i); j++)
                {
                    if (i % j == 0)
                    {
                        prime = false;
                        break;
                    }
                }
                if (prime)
                {
                    Console.Write($"{i}, ");
                }
            }
        }
    }
}