Terrible tethrathoth

Terrible tethrathoth is equal to E100(#^^#)^^#100 = E100(#^^#)^(#^^#)...(#^^#)^(#^^#)100 (with 100 #^^#'s) in Extended Cascading-E Notation.Sbiis Saibian's Ultimate Large Numbers List - Part III The term was coined by Sbiis Saibian.
Googology wiki user HaydenTheGoogologist2009 insisted that this number was equal to Hayden-Giant,Hayden's Big Numbers. Retrieved 2022-06-23. but Googology Wiki user DeepLineMadom pointed out the difference of the two numbers.A difference page of Talk: Hayden-Giant.
== Etymology ==
The name of this number is based on the word "terrible" and the number "tethrathoth".
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,100 (X \uparrow\uparrow (2X)) 2\}\)(non-climbing)Using particular notation \(\{a,b (A) 2\} = A\ \&\ a\) with prime b.\(\{100,100 ((X \uparrow\uparrow X)^2) 2\}\) (climbing)
Bird's array notation 	\(\{100,100 [1 \backslash 3] 2\}\)
X-Sequence Hyper-Exponential Notation	\(100\{(X\uparrow\uparrow X)\uparrow\uparrow X\}100\)
Fast-growing hierarchy 	\(f_{\varepsilon_1}(100)\)
Hardy hierarchy 	\(H_{\varepsilon_1}(101)\)
Slow-growing hierarchy (using this system
of fundamental sequences)	\(g_{\psi_0(\Omega_{2}2)}(100)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Epsilon level
Category:-thoth