using System;
using System.Collections.Generic;

class PrimesInGivenRange
{
        static void Main()
        {
            int startNumber = int.Parse(Console.ReadLine());
            int endingNumber = int.Parse(Console.ReadLine());
            PrintAListOfIntegers(FindPrimesInRange(startNumber, endingNumber));
        }
        static List<int> FindPrimesInRange(int startNum, int endNum)
        {
            List<int> list = new List<int>();
            bool answer;
            for (int i = startNum; i <= endNum; i++)
            {
                answer = true;
                for (int j = 2; j < i; j++)
                {
                    if (i % j == 0)
                    {
                        answer = false;
                        break;
                    }
                }
                if (answer == true && i > 1)
                {
                    list.Add(i);
                }
            }
            return list;
        }
        static void PrintAListOfIntegers(List<int> list)
        {
            Console.WriteLine(string.Join(", ", list));
        }
}