Math.Pow is not calculating correctly

Question

I\'m having a problem with C#. To be precise with the Math.pow(). If I try to calculate 15^14 then I get \"29192926025390624\". But if I calculate it with Wolfram Alpha I ge

Answer 1

Math.Pow works on doubles. This implementation with long gets the correct answer:

Func power = null;
power = (i, p) => p == 1 ? i : i*power(i, p - 1);
Console.WriteLine(power(15, 14));