Converts BigInteger to string with ToString method
using System; using System.Numerics; public class Example { public static void Main() { BigInteger value = BigInteger.Add(UInt64.MaxValue, 1024); Console.WriteLine(value.ToString()); Console.WriteLine(value.ToString("G")); Console.WriteLine(value.ToString("C")); Console.WriteLine(value.ToString("D")); Console.WriteLine(value.ToString("F")); Console.WriteLine(value.ToString("N")); Console.WriteLine(value.ToString("X")); } }