Source code in the nemerle programming language

using System.Console;
using System.Numerics;
using System.Numerics.BigInteger;

module BigInt
{
    Main() : void
    {
        def n = Pow(5, Pow(4, Pow(3, 2) :> int) :> int).ToString();
        def len = n.Length;
        def first20 = n.Substring(0, 20);
        def last20 = n.Substring(len - 20, 20);
        
        assert (first20 == "62060698786608744707", "High order digits are incorrect");
        assert (last20 == "92256259918212890625", "Low order digits are incorrect");
        assert (len == 183231, "Result contains wrong number of digits");
        
        WriteLine("Result: {0} ... {1}", first20, last20);
        WriteLine($"Length of result: $len digits");
    }
}