Is it prime

using System;

    class PrimeNr
    {
        static void Main()
        {
            Console.Write("Enter a number from 2 to 100: ");
            int input;
            int remain=1;
            while ((!int.TryParse(Console.ReadLine(), out input)) || !(input <= 100 && input > 1))
            {
                Console.WriteLine("\nPlease enter a number from 2 to 100: ");
            }
            for (int i = 2; i < input; i++)
            {
                remain = input % i;
                if (remain == 0)
                {
                    Console.WriteLine("\n{0} is composite number.\n",input);
                    break;
                }
            }
            if (remain != 0)
            {
                Console.WriteLine("\n{0} is prime number.\n",input);
            }
        }
    }