Double precision in C++ (or pow(2, 1000))

Question

I\'m working on Project Euler to brush up on my C++ coding skills in preparation for the programming challenge(s) we\'ll be having this next semester (since they don\'t let

Answer 1

Isn't pow(2, 1000) just 2 left-shifted 1000 times, essentially? It should have an exact binary representation in a double float. It shouldn't require a bignum library.