Pentfactor

The Pentfactor is equal to 100!5 using Extensible ! Notation. The term was coined by YabuszkoYabuszko, Extensible ! Notation. This number is comparable to gigol and gorgegol. 
==Etymology==
The name of this number is based on Greek prefix "penta-" and the factor.
==Approximations==
Notation 	Approximation
Arrow Notation 	\(82\uparrow\uparrow\uparrow\uparrow\uparrow101\)
Chained Arrow Notation 	\(82 \rightarrow 101 \rightarrow 5\)
BEAF 	\(\{82,101,5\}\)
Hyper-E notation 	
\(E160\#100\#\#4\)
Hyperfactorial Array Notation	\(100!4\)
Strong Array Notation 	\(s(82,100,5)\)
Nested Factorial Notation 	\(100![5]\)
Fast-growing hierarchy 	\(f_6(100)\)
Hardy hierarchy 	\(H_{\omega^6}(100)\)
Slow-growing Hierarchy 	\(g_{\varphi(4,0)}(100)\)
== Sources ==
== See Also ==
Category:Numbers
Category:Numbers by Yabuszko
Category:Factorial numbers
Category:Up-arrow notation level
Category:Orders of symmetric groups