Googology Wiki is an online encyclopedia and community dedicated to large numbers.

Welcome to the Internet's most comprehensive database of large numbers and fast-growing functions. We have made 10,280 articles. If you're fascinated by numbers like grand mega or Graham's number, why not help us out? We encourage you to edit!

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Talk to us on Freenode IRC (##googology)! (Or scroll down.)

New to big numbers?

Googology is the mathematical study of large numbers, their properties, and their nomenclature. If you're interested in the subject, but you don't know where to start, try reading about some basic functions and ideas:

Also, be sure to check out the links below.

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We have reached 0% of our goal of 10100 articles!


I have this vision of hoards of shadowy numbers lurking out there in the dark, beyond the small sphere of light cast by the candle of reason. They are whispering to each other; plotting who knows what. Perhaps they don't like us very much for capturing their smaller brethren with our minds. Or perhaps they just live uniquely numberish lifestyles, out there beyond our ken.
  —Douglas Reay


Got an idea or a creation to share? Sign up for Wikia if you haven't already, and create a blog post.

Found googology from a third-party source that isn't in the encyclopedia yet? Create a new article. Article creation is temporarily banned whilst notability guidelines are being revised.


  • October 30, 2018: Polish Googology Wiki is established.
  • July 19, 2018: Malay Googology Wiki is established.
  • June 14, 2018: This wiki has switched to HTTPS, however MathJax tries to load itself through HTTP, so many formulas will not render now. This has been fixed, but it'll take some time to be approved. Sorry about the mess again!
  • December 9, 2017: It is the 9th Anniversary of Sbiis Saibian's site!
  • December 5, 2017: Googology Wiki celebrates 9 years!
  • September 5, 2017: Czech Googology wiki is open.
  • January 4, 2017: We finally reached our 10,000th article!!!
  • December 5, 2016: Happy 8th birthday, Googology Wiki!
  • September 10, 2016: We are discussing about splitting some big categories. Come join if you have any suggestions!

More news...


This is a compilation of websites that may be of interest to large number enthusiasts.

This isn't the only way to access the IRC channel, though! You should get yourself a proper client like mIRC (Windows only) or Quassel (cross-platform).

pl:Googologia Wiki