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Googol is the number 10100 (or Ten duotrigintillion) (10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000).
A 9-year-old Milton Sirotta, nephew of U.S. mathematician Edward Kasner, first used the word googol. Sirotta made this word in 1937, for the number represented by the numeral 1 followed by 100 zeros.
The company Google was named after the number "googol." Its creators originally called it BackRub because it used backlinks to tell how important each page was. Someone suggested "googolplex." They shortened it to "googol" and then spelled the word wrong when looking for a domain name that was not taken yet.
- Peter Lynch (June 23, 2020). It all adds up: the ever-growing goals of googology. Irish Times. https://www.irishtimes.com/news/science/it-all-adds-up-the-ever-growing-goals-of-googology-1.4286511. Retrieved July 16, 2020.
- "Googol". https://www.merriam-webster.com/dictionary/googol. Retrieved July 16, 2020.
- Nathan McAlone (October 5, 2015). "The true story behind Google's hilarious first name: BackRub". Business Insider. https://www.businessinsider.com/the-true-story-behind-googles-first-name-backrub-2015-10. Retrieved July 16, 2020.