public static void Main()
BigInteger bi1 = 2147483647;
Console.WriteLine("BigInteger: {0}", bi1);
BigInteger bi2 = new BigInteger(2147483647);
Console.WriteLine("BigInteger from double value: {0}", bi2);
BigInteger bi3 = new BigInteger(9223372036854775807);
Console.WriteLine("BigInteger from Int64 value: {0}", bi3);
BigInteger bi4 = new BigInteger(18446744073709551615);
Console.WriteLine("BigInteger from UInt64 value: {0}", bi4);