using System;

using System.Numerics;

public class Program

{

    public static void Main()

    {

        // BigInteger conversion to bytearray

        var x = new BigInteger(14256661);

        var z = x.ToByteArray();

        Console.WriteLine("14256661 -> " + BitConverter.ToString(z).Replace("-", string.Empty));

        // bytearray to BigInteger

        var y = new BigInteger(z);

        Console.WriteLine("158AD900 -> " + y);

        // Wrong value returns diferent number

        var n = new BigInteger(new byte[] {0x15, 0x8A, 0xD9});

        Console.WriteLine("158AD9   -> " + n);

    }

}