Have you every multiplied 2 by itself over and over to see how big it could get? Ever wonder about really big numbers? Starting from common "large" numbers like 2^56(DES) and 2^128(ipv6) through really big numbers such as the Ackermann numbers and Grahm's number we will touch on hyperoperation, alternative numerical representations, and the arrival at large numbers through complexity and Ramsey theory.