gistfile1.cs

using System;

class Program
{
  static void Main(string[] args)
  {
    var i2_53 = 9007199254740992;
    var u2_53 = 9007199254740992U;

    var f2_53 = Math.Pow(2, 53);

    Console.WriteLine(i2_53 == f2_53);
    Console.WriteLine(u2_53 == f2_53);
    Console.WriteLine(i2_53 + 1 == f2_53);
    Console.WriteLine(u2_53 + 1 == f2_53);
    Console.WriteLine(i2_53 + 3 == f2_53 + 4);
    Console.WriteLine(u2_53 + 3 == f2_53 + 4);
  }
}