Grand terrible tethrathoth

Grand terrible tethrathoth is equal to E100(#^^#)^^#100#2 using Extended Cascading-E Notation. The term was coined by Sbiis Saibian.
== Etymology ==
The name of this number is based on the prefix "terrible" and the number "tethrathoth".
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,3,2 (X \uparrow\uparrow (2X)) 2\}\)Using particular notation \(\{a,b (A) 2\} = A\ \&\ a\) with prime b.
Bird's array notation 	\(\{100,3,2 [1 \backslash 3] 2\}\)
X-Sequence Hyper-Exponential Notation	\(100\{(X\uparrow\uparrow X)\uparrow\uparrow X\}100\)
Fast-growing hierarchy 	\(f_{\varepsilon_1}^2(100)\)
Hardy hierarchy 	\(H_{\varepsilon_1 2}(100)\)
Slow-growing hierarchy 	\(g_{\vartheta(\varepsilon_{\Omega 2 + \vartheta(\varepsilon_{\Omega 2 + 1})})}(100)\)
== Sources ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Epsilon level
Category:-thoth