What is a googol?
A googol is a very large number: the number 1 followed by 100 zeros, or 10100. Unlike most other names for numbers, it does not relate to any other numbering scale. The American mathematician Edward Kasner first used the term in 1938; when searching for a term for this large number, Kasner asked his nephew, Milton Sirotta, then about nine years old, to suggest a name. The googolplex is 10 followed by a googol of zeros. The popular Web search engine Google.com is named after the concept of a googol.