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This is a list of googolisms in ascending order.

This list contains ill-defined large numbers, e.g. BEAF numbers beyond tetrational arrays, BIG FOOT, Little Bigeddon, Sasquatch, and large numbers whose well-definedness is not known, e.g. large numbers defined by Taranovsky's ordinal notation and Bashicu matrix number with respect to Bashicu matrix system version 2.3.

This page (the main list) lists the more notable googolisms on each class; click the "More..." link at the end of each section to see more googolisms in that class.

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Class 0 (0 - 6)

Name Value Zero 0 Googolplexianminex \(10^{-(10^{10^{10^{100}}})}\) Googolplexminex \(10^{-(10^{10^{100}})}\) Googolminex \(10^{-(10^{100})}\) or 1/googolplex One 1 Two 2 Three 3 Four 4 Five 5 Six 6

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Class 1 (7 - 1,000,000)

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Class 2 (1,000,000 - \(10^{1,000,000}\))

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Class 3 (\(10^{1,000,000} - 10^{10^{1,000,000}}\))

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Class 4

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Class 5

Name Value Mejillion 103*103*103,000,000+3 Gijillion 103*103*10300,000,0000+3 Pentalogue 1010101010 Astillion 103*103*103*1012+3 Lunillion 103*103*103*1015+3 Fermillion 103*103*103*1018+3 Multillion 103*103*103*1042+3 Googoltriplex 10101010100 Fzgargoogolplex googolduplexgoogolduplex Ecetontriplex 10101010303 Gigafaxul (((200!)!)!)! ~ 10101010379 Googoltriplexigong 10101010100,000

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Tetration level

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Up-arrow notation level

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Linear omega level

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Quadratic omega level

Name Value Generalplex {10,10,10,{10,10,10,10}} = {10,3,1,1,2} Kaboodolplex \(\underbrace{10 \rightarrow\ldots\rightarrow 10}_{\text{kaboodol}+2} < \text{kaboodolplex} < \underbrace{10 \rightarrow\ldots\rightarrow 10}_{\text{kaboodol}+3}\) Troogolplex {10,10,10,{10,10,10,100}} BOX_M̃ Thrangol E100###100#100 Threagol E100###100##3 Thrugold E100###100##100 Thrugolthra E100###100###3 Thrugoltesla E100###100###4 Throotrigol E100###100###100 Triggol {10,10,10,100,2} Triggolplex {10,10,10,{10,10,10,100,2},2} Thrantrigol E100###100###100#100 Thrutrigold E100###100###100##100 Pentatri {3,3,3,3,3} Throotergol E100###100###100###100 Traggol {10,10,10,100,3} Throopetol E100###100###100###100###100 Treegol {10,10,10,100,4} Superpent {5,5,5,5,5} Throohexol E100####6 Trigol {10,10,10,100,5} Throoheptgol E100####7 Troggol {10,10,10,100,6} Throogogdol E100####8 Tragol {10,10,10,100,7} Pentadecal {10,10,10,10,10} Tetroogol E100####100 Quadroogol {10,10,10,10,100}

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Polynomial omega level

Name Value Pentadecalplex {10,10,10,10,{10,10,10,10,10}} Quadroogolplex {10,10,10,10,{10,10,10,10,100}} Tetrangol E100####100#100 Tetrugold E100####100##100 Tetrithroogol E100####100###100 Tetrootrigol E100####100####100 Quadriggol {10,10,10,10,100,2} Hexatri {3,3,3,3,3,3} Tetrootergol E100####100####100####100 Quadraggol {10,10,10,10,100,3} Tetroopetol E100####100####100####100####100 Quadreegol {10,10,10,10,100,4} Tetroohexol E100#####6 Quadrigol {10,10,10,10,100,5} Superhex {6,6,6,6,6,6} Tetrooheptgol E100#####7 Quadroggol {10,10,10,10,100,6} Tetroogogdol E100#####8 Quadragol {10,10,10,10,100,7} Hexadecal {10,10,10,10,10,10} Pentoogol E100#####100 Quintoogol {10,10,10,10,10,100} Quintiggol {10,10,10,10,10,100,2} Quintaggol {10,10,10,10,10,100,3} Quinteegol {10,10,10,10,10,100,4} Quintigol {10,10,10,10,10,100,5} Quintoggol {10,10,10,10,10,100,6} Supersept {7,7,7,7,7,7,7} Quintagol {10,10,10,10,10,100,7} Heptadecal {10,10,10,10,10,10,10} Hexoogol E100######100 Sextoogol {10,10,10,10,10,10,100} Superoct {8,8,8,8,8,8,8,8} Octadecal {10,10,10,10,10,10,10,10} Heptoogol E100#######100 Septoogol {10,10,10,10,10,10,10,100} Superenn {9,9,9,9,9,9,9,9,9} Ennadecal {10,10,10,10,10,10,10,10,10} Ogdoogol E100########100 Octoogol {10,10,10,10,10,10,10,10,100} Iteral {10,10,10,10,10,10,10,10,10,10} = {10,10 (1) 2} = {10,2,2 (1) 2} Ultatri {3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3} = {3,27 (1) 2} Goobol {10,100(1)2} Godgahlah E100#100100 = E100#^#100 Giatrixul 200![200,200,200] Godgahlahgong E100,000#100,000100,000

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Exponentiated linear omega level

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Exponentiated polynomial omega level

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Double exponentiated polynomial omega level

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Triple exponentiated polynomial omega level

Name Value Extendol s(3,3{1`2}2) Graltothol E100#^#^#^##100 Goduplexulus {10,100 ((100)1) 2} Thraeltothol E100#^#^#^###100 Terinntothol E100#^#^#^####100 Pentaeltothol E100#^#^#^#####100 Godtertol E100#^#^#^#^#100 Gotriplexulus \(\lbrace 10,100 ((\underbrace{0,0,\ldots ,0,0,}_{100 \text{ zeroes}}1)1) 2\rbrace\) = {10,100 (((1)1)1) 2}

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Iterated Cantor normal form level

Name Value Graltertol E100#^#^#^#^##100 Thraeltertol E100#^#^#^#^###100 Godtopol E100#^#^#^#^#^#100 Graltopol E100#^#^#^#^#^##100 Godhathor E100#^#^#^#^#^#^#100 Godheptol E100#^#^#^#^#^#^#^#100 Godoctol E100#^#^#^#^#^#^#^#^#100 Godentol E100#^#^#^#^#^#^#^#^#^#100 Goddekathol E100#^#^#^#^#^#^#^#^#^#^#100 Tethrathoth E100#^^#100 Goppatoth 10↑↑100 & 10 Giaquaxul 200![200,200,200,200]

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Epsilon level

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Binary phi level

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Bachmann's collapsing level

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Higher computable level

Since the comparison (or even the well-definedness) of numbers of this level is unknown, the order of entries does not necessarily imply the order of the sizes. Also, several numbers are defined by an OCF, which is uncomputable, and are not known to be computable.

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Uncomputable numbers

The term "uncomputable number" here refers to the numbers defined in terms of uncomputably fast-growing functions. This table contains large numbers which are known to be ill-defined. For more details on the ill-definedness, click the "More..." link below.

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