Octal-Dooqnol

The Octal-Dooqnol is equal to \(8\uparrow \uparrow5\) using arrow notation. The number was coined by Wikia user Username5243. This number is approximately E15,131,336#3 or exactly E(8)1#5 in Hyper-E notation.
== Etymology ==
The name of this number is based on prefix "octal-" and the number "dooqnol".
== Approximations in other notations ==
Notation 	Lower bound 	Upper bound
Exponentiation 	\(8^{8^{8^{8^{8}}}}\) 	\(8^{8^{8^{8^{8}}}}\)
Arrow notation 	\(8 \uparrow\uparrow 5\) 	\(8 \uparrow\uparrow 5\)
Chained arrow notation 	\(8 \rightarrow 5 \rightarrow 2\) 	\(8 \rightarrow 5 \rightarrow 2\)
Decimal equivalent 	\(10^{10^{10^{10^{15,131,336}}}}\) 	\(10^{10^{10^{10^{15,131,337}}}}\)
Notation Array 	(8{2,2}5) 	(8{2,2}5)
BEAF & Bird's array notation 	\(\{8,5,2\}\) 	\(\{8,5,2\}\)
Hyperfactorial array notation	\(7!1\) 	\(8!1\)
Hyper-E notation 	E[8]1#5 	E[8]1#5
Fast-growing hierarchy 	\(f^{4}_2(20)\) 	\(f^{4}_2(21)\)
Tetration 	\(^{5}8\) 	\(^{5}8\)
Hardy hierarchy 	\(H_{(\omega^2) 5}(19)\) 	\(H_{(\omega^2) 5}(20)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^{\omega^\omega}}}}(8)\)	\(g_{\omega^{\omega^{\omega^{\omega^\omega}}}}(8)\)
== Sources ==
Category:Numbers
Category:Numbers by Username5243
Category:Class 5
Category:Powers of 2
Category:Googol series
Category:Doogol Regiment