Googolplex

Full definition of googolplex

Numeral

1. (cardinal) The number $10^\{10^\{100\}$, ten to the power of a googol.
• 1980, Carl Sagan, , chapter IXIf the universe were packed solid with neutrons, say, so there was no empty space anywhere, there would still only be about 10¹²⁸ particles in it, quite a bit more than a googol but trivially small compared to a googolplex.

Related terms

• googol