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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 18,836 articles since December 5, 2008. If you're fascinated by numbers like millillion or ternary-gogol, why not help us out? We encourage you to edit! As of December 5, 2023, Googology Wiki is now 15 years old and going strong!

(Googology in other languages: Česky · Deutsch · Español · Français · 日本語 · Nederlands · Русский · 한국어 · 中文 · Українська

New to big numbers?

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

• Short essay on the foundations and history of the field
• Googol and googolplex
• Tetration
• Arrow notation
• Graham's number
• Introduction to Googology blog post by Sbiis Saibian
• List of googolisms and functions

Also, be sure to check out the links below.

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Article Count Progress

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

Quote

The key to the biggest number contest is not swift penmanship, but rather a potent paradigm for concisely capturing the gargantuan.

  —Scott Aaronson^[src]

Contributing

Got an idea or a creation to share? Create an account on Fandom if you haven't already, wait for being autoconfirmed and create a blog post.

Please read carefully FANDOM's terms of use and the policy before creating or editing an article.

GoogolNews​™

• January 1, 2024: Happy New Year, 2024!
• December 5, 2023: Googology Wiki turned 15 years old!
• November 21, 2023: Ukrainian Googology Wiki in the name of Вікі Googology was linked to our community!
• October 22, 2023: We reached our 18,000-th article! That's 90% of the way to the big 20,000!
• June 29, 2023: We finally reached our 17,000-th article!
• June 8, 2023: Googology Wiki underwent several technical issues related to the assets, so Fandom wikis wouldn't render properly for a brief period, including, but not limited to this wiki and Community Central. The issues were subsequently fixed in the later days. Sorry for an another mess!
• May 11, 2023: We finally reached our 16,000-th article!
• April 20, 2023: MediaWiki was upgraded to 1.39.
• March 18, 2023: Yet another big milestone... We finally reached our 15,000th article!
• February 28, 2023: Fandom announced that Googology Wiki would be migrated to MediaWiki 1.39 by April 20.
• February 10, 2023: We reached the 14,000-th article!
• January 14 – 20, 2023: We held the second admin election, and relieved C7X's admin and bureaucrat career!
• January 12, 2023: We opened the second admin election, and is set to hold by January 14, 2023.
• January 1, 2023: Happy New Year, 2023!

More news...

Links

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

For beginners

• Large numbers increasing Douglas Shamlin Jr.'s video series about increasing numbers. It goes from zero to numbers described using Bird's array notation. Recommended for beginners.
• One to Infinity: A Guide to the Finite by Sbiis Saibian/(user), a guided tour of googology and number systems. Recommended for beginners.
• Large Numbers by Robert Munafo. Recommended for beginners.

Sites

• Aarex Googology by Aarex Tiaokhiao/(user (inactive))
• Big Number Central by Jonathan Bowers
• Notable Properties of Specific Numbers by Robert Munafo
• Super Huge Numbers (main site) by Chris Bird
• Pointless Large Number Stuff by wiki user cookiefonster
• Big Number Duel by Agustín Rayo
• Hayden's Big Numbers by wiki user HaydenTheGoogologist2009
• Pointless Googolplex Stuffs and ExE ultimate googolism generator by wiki user DeepLineMadom
• AR Googol by wiki user ARsygo
• Who Can Name the Bigger Number? by Scott Aaronson
• Turing Machine Simulator by Anthony Morphett
• CompactStar's Googology by wiki user CompactStar

• Impossible Numbers by wiki user Antfarmerguys

Subreddits

• r/googology
• r/Scholar

Ordinals

• Ordinal Explorer by wiki user Rgetar
• An interactive diagram for ordinals up to \(\varepsilon_{\varepsilon_0}\)

Non-wiki googology links in other languages

• 大数入门 for those who know Chinese. Beware though, the article contains tons of mistakes.
• Large Number in pixiv dictionary for those who know Japanese.

Miscellany

• Googol Maps 2.0 (year - size) by wiki user Koteitan

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