Octal-Doomol

The Octal-Doomol is equal to \(8\uparrow \uparrow1000\) using arrow notation. The term was coined by Wikia user Username5243.
ARsygo coined octal-giggolchime for this number.AR Googol - Numbers from BEAF. Retrieved 2022-10-22.
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(8\uparrow \uparrow 1000\)	\(8\uparrow \uparrow 1000\)
Steinhaus-Moser Notation 	997[4] 	998[4]
Chained arrow notation 	\(8\to 1000 \to 2\) 	\(8\to 1000 \to 2\)
Hyperfactorial array notation	999!1 	1000!1
BEAF & Bird's array notation 	{8,1000,2} 	{8,1000,2}
Hyper-E notation 	E15,131,336#997 	E15,131,337#997
Fast-growing hierarchy 	\(f_3(997)\) 	\(f_3(998)\)
Hardy hierarchy 	\(H_{\omega^3}(997)\) 	\(H_{\omega^3}(998)\)
Slow-growing hierarchy 	\(g_{\varepsilon_0}(998)\) 	\(g_{\varepsilon_0}(999)\)
== Sources ==
Category:Numbers
Category:Numbers by Username5243
Category:Tetration level
Category:Powers of 2
Category:Googol series
Category:Doogol Regiment