using System;
using System.Numerics;
public class Example
{
public static void Main()
{
BigInteger n1 = BigInteger.Pow(9999999999, 3);
BigInteger n2 = BigInteger.Multiply(9999999999, 99999999);
try
{
Console.WriteLine("The greatest common divisor of {0} and {1} is {2}.",
n1, n2, BigInteger.GreatestCommonDivisor(n1, n2));
}
catch (ArgumentOutOfRangeException e)
{
Console.WriteLine("Unable to calculate the greatest common divisor:");
Console.WriteLine(" {0} is an invalid value for {1}",
e.ActualValue, e.ParamName);
}
}
}