using System;

public class Program

{

    public static void Main()

    {

            bool notPrime = false;  

            int j;  

            Console.WriteLine("Enter your Target?");  

            int target = Int32.Parse(Console.ReadLine());  

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

            {  

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

                {  

                    if (i % j == 0)  

                    {  

                        notPrime = true;  

                        break;  

                    }  

                }  

                if (!notPrime)  

                    Console.Write("{0} ", j);  

                else  

                    notPrime = false;  

            }  

            Console.ReadLine();  

    }

}