Tethracubor

Tethracubor (also called tethratertia) is equal to E100#^^###100 in Extended Cascading-E Notation, which expands to E100#^^##>#^^##>#^^##> ... ... >#^^##>#^^##>#^^##100 with 100 #^^##s. The term was coined by Sbiis Saibian.
==Etymology==
The name of this number is based on the number tethrathoth and the word "cube".
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(X \uparrow\uparrow X \uparrow 3\ \&\ 100\)
Bird's array notation 	\(\{100,100 [1 \backslash 1 \backslash 1 \backslash 2] 2\}\)
Hyperfactorial array notation 	\(100![1,1,1,1,1,1,2]\)
Fast-growing hierarchy 	\(f_{\eta_0}(99)\) = \(f_{\varphi(3,0)}(99)\)
Hardy hierarchy 	\(H_{\eta_0}(100)\) = \(H_{\varphi(3,0)}(100)\)
Slow-growing hierarchy (using Buchholz hierarchy)	\(g_{\psi_0(\Omega_2^3)}(100)\)
==Sources==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Binary phi level
Category:Tethracubor series