For Reddit Easy Challenge 286

Reverse_Factorial.cs

using System;

namespace Reverse_Factorial
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter Number: ");
            int input = Convert.ToInt32(Console.ReadLine());
            int i = 2;

            Console.Clear();
            Console.Write(input + " = ");

            while(input > 1 && input % i == 0)
            {
                input = input / i;
                i++;
            }

            if (input == 1)
                Console.Write((i-1) + "!\n");
            else
                Console.Write("Not a Factorial\n");

            Console.ReadKey();
        }
    }
}

For Reddit Easy Challenge 286