Googolding

A googolding is a number coined by Sbiis Saibian equal to 10^500, in analogy to the googolgong (10^100,000), equal to 1 followed by 500 zeros. It's a ridiculously huge number far bigger even the quartic hypervolume of the entire run of the universe, and needs to be compared to entirely different things! If you want an example of its size, the probability that 196 random people in a room all share the same birthday is about 1 in a googolding.