Megafaxul

The megafaxul (also called faxulduenekFactorial Array Notation - Extremely big numbers) is equal to kilofaxul!, (faxul!)! or ((200!)!)!, where ! denotes the factorial. The term was coined by Lawrence Hollom. Lawrence Hollom's large numbers site It is also equal to 200!3 using Nested Factorial Notation.
== Etymology ==
The name of this number is based on SI prefix "mega-" and the number "faxul".
== Approximations in other notations ==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(10^{10^{10^{377}}}\) 	\(10^{10^{10^{378}}}\)
Arrow notation 	\(10 \uparrow 10 \uparrow 10 \uparrow 377\) 	\(10 \uparrow 10 \uparrow 10 \uparrow 378\)
Steinhaus-Moser Notation 	168[3][3][3] 	169[3][3][3]
Copy notation 	2[2[2[378]]] 	3[3[3[378]]]
Chained arrow notation 	\(10 \rightarrow (10 \rightarrow (10 \rightarrow 377))\)	\(10 \rightarrow (10 \rightarrow (10 \rightarrow 378))\)
Taro's multivariable Ackermann function	A(3,A(3,A(3,1253))) 	A(3,A(3,A(3,1254)))
BEAF 	\(\{10,\{10,\{10,377\}\}\}\) 	\(\{10,\{10,\{10,378\}\}\}\)
Hyper-E notation 	E377#3 	E378#3
Hyper-E notation 	~E377.4701159159172#3 	~E377.4701159159172#3
Bird's array notation 	\(\{10,\{10,\{10,377\}\}\}\) 	\(\{10,\{10,\{10,378\}\}\}\)
Fast-growing hierarchy 	\(f^3_2(1\,241)\) 	\(f^3_2(1\,242)\)
Hardy hierarchy 	\(H_{(\omega^2) 3}(1\,235)\) 	\(H_{(\omega^2) 3}(1\,236)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^\omega}}}(169)\) 	\(g_{\omega^{\omega^{\omega^\omega}}}(170)\)
== Conversion ==
(MegaFaxul)\(!\) = Gigafaxul
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Lawrence Hollom
Category:Orders of symmetric groups
Category:Class 4
Category:Factorial numbers
ja:メガファクスル