Powers of 10 - Googol

Googol

The number googol is 10100

The term was coined in 1938 by 9-year-old Milton Sirotta, nephew of American mathematician Edward Kasner. Popularized by his 1940 book Mathematics and the Imagination, it was used to compare and illustrate really large numbers.

Googolplex, a much larger power of ten, was also introduced in that book.