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

namespace PrimesInRange
{
    class PrimesInRange
    {
        static void Main(string[] args)
        {
            int start = ReadNumber();
            int end = ReadNumber();

            Console.WriteLine(string.Join(", ", GetPrimes(start, end)));
        }

        static List<int> GetPrimes(int start, int end)
        {
            List<int> primesList = new List<int>();

            for (int num = start; num <= end; num++)
            {
                bool prime = true;
                var maxDiv = (int)Math.Sqrt(num);

                if (num < 2)
                {
                    prime = false;
                }
                for (int div = 2; div <= maxDiv; div++)
                {
                    if (num % div == 0)
                    {
                        prime = false;
                        break;
                    }
                }

                if (prime)
                {
                    primesList.Add(num);
                }
            }

            return primesList;
        }

        static int ReadNumber()
        {
            var n = int.Parse(Console.ReadLine());

            return n;
        }
    }
}