Others

Other googology sites

Recommended for beginners

• The Googology Wiki (a collection of notations and numbers which must have valid sources + more approximations)

• What is googology? Genspark (AI) collected and summarized information on googology. Recommended for beginners to get some background information.

• Sbiis Saibian's excellent large number site: One to Infinity: A Guide to the Finite (a guided tour about number systems. There, he made a system, named Extensible-E, recommended for beginners)

• Large Numbers at MROB by Robert Munafo. Recommended for beginners.

• Polytope sites by Jonathan Bowers (check out the Big Number Central for his googology works, including illion numbers, BEAF and infinity scrapers!)

• Pointless Large Number Stuff by cookiefonster

Videos

• Large Numbers Gradually Increasing by Douglas Shamlin Jr. It goes from zero to numbers described using Bird's array notation. Recommended for beginners. (a video series/playlist about numbers increasing, but only shown in Bird's array notation)

• Numbers -Infinity to Infinity by NO! (a playlist about numbers increasing, since it's fun to watch, as well as it provides tips, hence it's recommended for beginners. However, this does not include all of the parts.)

• 1 to Absolute Infinity in One Video by NO! (a journey of numbers from 1 to Absolute Infinity. NOTE: the video is 14 hours long, combined from Large Numbers Gradually Increasing. Therefore, please watch it when you're free.)

• Ultimate List of Large Numbers videos (originally by Douglas Shamlin Jr., but reuploaded by Dr2xmillion 2023 because the original videos were removed) 

• 1. Part 1

  2. Part 2

  3. Part 3

  4. Part 4 (reuploaded by NilGaming)

  5. All parts sped up

  6. 2024 version (by Douglas Shamlin Jr. himself, includes the largest computable numbers ever)

• Hexation and Graham's Number by Prime Newtons (discussing hyperoperation and Graham's number)

Numbers and notation sites (includes fictional googology sites)

• XRQ CORPORATION's googology sites:

  1. XRQ CORPORATION's Googol Series

  2. XRQ CORPORATION's Triubol Series

  3. XRQ CORPORATION's Colossol Series

  4. XRQ CORPORATION's Gongulus Series

  5. XRQ CORPORATION's Goplexulus Series

  6. XRQ CORPORATION's Golapulus Series

• ARsygo's googology site: AR Googol

• DeepLineMadom's googology sites:

  1. Pointless Googolplex Stuffs

  2. ExE ultimate googolism generator

  3. More Extensible-E notations

  4. Satanic Infinity Scrapers

  5. Madom's Binary Bisector Notations

• Hyp cos' googology site: Steps Toward Infinity!

• Antfarmerguys' googology site: Spiralton's Website

• CompactStar's googology site: CompactStar's Googology

• RedBandServer2021's googology site: Numbers

• Redstonepillager's googology site: Rpillager Googology

• SeveralLegend9998's googology sites: SeveralLegend9998's Googology Series and SeveralLegend9998's New Googology Series

• Sebastian Gomez05's googology site: Ember 20736 Googolisms

• NO!'s standard / fictional googology site: NO!'s Official Website

• Jesse Kohn's standard / fictional googology site: Jesse's Official Site

• Mathis R.V's fictional googology site: Mathis R.V's website

• FF2K23's fictional googology site: FF2K's official site

• Gamer Googol's fictional googology site: Gamer Googol Web

• JoshuaDR.0809's fictional googology site: JoshuaDR.0809's Website

• Jax G's fictional googology site: Jax's Site

• kien6886's fictional googology site: kien6886's Official Site

• DaCrazyBoy's fictional googology site: DaCrazyBoy

• Smol twi's fictional googology site: smol twi's website

Main sites in googology wiki

• Aarex Googology by Aarex Tiaokhiao

• Notable Properties of Specific Numbers by Robert Munafo

• Super Huge Numbers by Chris Bird

• Big Number Duel by Agustín Rayo

• Who Can Name the Bigger Number? by Scott Aaronson

BB(5) sites

• The Busy Beaver Challenge: [July 2nd 2024] We have proved “BB(5) = 47,176,870”

• Shtetl-Optimized: BusyBeaver(5) is now known to be 47,176,870

• Quanta Magazine: With Fifth Busy Beaver, Researchers Approach Computation’s Limits

• The Busy Beaver Challenge: The Story of Proving BB(5) = 47,176,870

Note that the BB(5) in the above articles is actually FF(5).

Ordinal sites

• Ordinal Explorer by Rgetar

• An interactive diagram for ordinals up to ε(ε0)

Googology sites in other languages

• Googology Wiki in Japanese: 巨大数研究 Wiki

• Googology Wiki in Chinese: 大數學 維基

• 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.

Subreddits

• r/googology

• r/Scholar

Social media links

1. YouTube channel - Eta Hyper Three Cardinal 2025

2. Instagram - hayden_leung_203

3. Reddit - Haydenism_Nomad_420

4. Googology Wiki page - HaydenTheGoogologist2009