public static void Main()
Console.Write("Enter a number: ");
Num = Convert.ToInt32(Console.ReadLine());
for (int Count = 2; Count < Convert.ToInt32(Math.Sqrt(Num)) +1; Count++)
Console.WriteLine("Is prime");
Console.WriteLine("Is not prime");
Console.WriteLine("Not greater than 1");
Console.Write("Again (y or n)? ");
Again = Console.ReadLine().ToUpper();