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The kilofaxul (also called faxulenek[1]) is equal to faxul! or (200!)!, where ! denotes the factorial.[2] It is also equal to 200!2, using Nested Factorial Notation. The term was coined by Lawrence Hollom.

Etymology

The name of this number is based on SI prefix "kilo-" and the number "faxul".

Approximations in other notations

Notation Lower bound Upper bound
Arrow notation \(124\uparrow416\uparrow144\) \(338\uparrow621\uparrow135\)
Down-arrow notation \(565\downarrow\downarrow138\) \(99\downarrow\downarrow190\)
Steinhaus-Moser Notation 168[3][3] 169[3][3]
Copy notation 2[2[378]] 3[3[378]]
H* function H(98H(124)) H(99H(124))
Taro's multivariable Ackermann function A(3,A(3,1252)) A(3,A(3,1253))
Pound-Star Notation #*((1))*((154))*9 #*((1))*((155))*9
BEAF {124,{416,144}} {338,{621,135}}
Hyper-E notation E[565]137#2 E[99]189#2
Bashicu matrix system (0)(1)[1251] (0)(1)[1252]
Fast-growing hierarchy \(f_2(f_2(1\,245))\) \(f_2(f_2(1\,246))\)
Hardy hierarchy \(H_{\omega^22}(1\,245)\) \(H_{\omega^22}(1\,246)\)
Slow-growing hierarchy \(g_{\omega^{\omega^{\omega^23+\omega7+7}2}}(10)\) \(g_{\omega^{\omega^{\omega^23+\omega7+7}3}}(10)\)

Sources

  1. Factorial Array Notation - Extremely big numbers
  2. Lawrence Hollom's large numbers site

See also

Hyperfactorial array notation numbers: Minor Faxul Group | Major (Giaxul)

Faxul group: Faxul · Kilofaxul · Megafaxul · Gigafaxul · Terafaxul · Petafaxul · Exafaxul · Grand Faxul · Grand Kilofaxul · Grand Megafaxul · Grand Gigafaxul · Grand Terafaxul · Grand Petafaxul · Grand Exafaxul · Bigrand Faxul · Bigrand Kilofaxul · Bigrand Megafaxul · Trigrand Faxul · Trigrand Kilofaxul · Quadgrand Faxul · Quintgrand Faxul
Expofaxul group: Expofaxul · Kiloexpofaxul · Megaexpofaxul · Gigaexpofaxul · Teraexpofaxul · Petaexpofaxul · Exaexpofaxul · Grand expofaxul · Grand kiloexpofaxul · Grand megaexpofaxul · Grand gigaexpofaxul · Grand teraexpofaxul · Grand petaexpofaxul · Grand exaexpofaxul · Bigrand expofaxul · Bigrand kiloexpofaxul · Bigrand megaexpofaxul · Trigrand expofaxul · Trigrand kiloexpofaxul · Quadgrand expofaxul · Quintgrand expofaxul
Tetrofaxul group: Tetrofaxul · Kilotetrofaxul · Megatetrofaxul · Gigatetrofaxul · Teratetrofaxul · Petatetrofaxul · Exatetrofaxul · Grand tetrofaxul · Grand kilotetrofaxul · Grand megatetrofaxul · Grand gigatetrofaxul · Grand teratetrofaxul · Grand petatetrofaxul · Grand exatetrofaxul · Bigrand tetrofaxul · Bigrand kilotetrofaxul · Bigrand megatetrofaxul · Trigrand tetrofaxul · Trigrand kilotetrofaxul · Quadgrand tetrofaxul · Quintgrand tetrofaxul
Pentofaxul group: Pentofaxul · Kilopentofaxul · Megapentofaxul · Gigapentofaxul · Grand pentofaxul · Grand kilopentofaxul · Grand megapentofaxul · Grand gigapentofaxul · Bigrand pentofaxul · Trigrand pentofaxul
Hexofaxul group: Hexofaxul · Kilohexofaxul · Megahexofaxul · Gigahexofaxul · Grand hexofaxul · Grand kilohexofaxul · Grand megahexofaxul · Grand gigahexofaxul · Bigrand hexofaxul · Trigrand hexofaxul
Hyperfaxul group: Hyperfaxul · Kilohyperfaxul · Megahyperfaxul · Gigahyperfaxul · Terahyperfaxul · Petahyperfaxul · Exahyperfaxul · Grand hyperfaxul · Grand kilohyperfaxul · Grand megahyperfaxul · Grand gigahyperfaxul · Grand terahyperfaxul · Grand petahyperfaxul · Grand exahyperfaxul · Bigrand hyperfaxul · Bigrand kilohyperfaxul · Bigrand megahyperfaxul · Trigrand hyperfaxul · Trigrand kilohyperfaxul · Trigrand megahyperfaxul · Quadgrand hyperfaxul · Quintgrand hyperfaxul