using System;

public class Program

{

    public static void Main()

    {

        var maxOfInt = int.Parse("2147483647"); // OK

        Console.WriteLine("maxOfInt==[" + maxOfInt + "]");  

        //var maxOfIntPlusOne = int.Parse("2147483648"); // crashes

         var now = DateTime.UtcNow;

         var initialId = string.Format(

                "{0}{1}{2}{3}{4}", 

                now.Year.ToString().Substring(2, 2),

                now.Month, // cannot use the complete year because it overflows the maximum int value required by .Identity method

                now.Day, 

                now.Hour, 

                now.Minute);

        Console.WriteLine("initialId==[" + initialId + "]");

​

        var timeInt = int.Parse(initialId);

        Console.WriteLine("timeInt==[" + now + "]");

    }

}