Googolplex

The googolplex is a variant of the googol, equal to $$10^{10^{100}}$$ or one followed by a googol ($$10^{100}$$) zeroes. The history of this number differs from source to source—some believe that Milton Sirotta coined the word, others think it was Edward Kasner, and yet another group thinks that it was coined by "another mathematician."

A googolplex is practically impossible to print out in computer memory. However, there is a project known as the Googolplex project where a computer is printing out zeroes in an extremely rapid pace. They estimate that it will take approximately 556 years before it reaches googolplex.