Triple-terrible tethrathoth

The triple-terrible tethrathoth is equal to E100(((#^^#)^^#)^^#)^^#100 using Extended Cascading-E Notation. The term was coined by Sbiis Saibian.
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,100 (X \uparrow\uparrow (4X)) 2\}\)Using particular notation \(\{a,b (A) 2\} = A\ \&\ a\) with prime b.
Bird's array notation 	\(\{100,100 [1 \backslash 5] 2\}\)
X-Sequence Hyper-Exponential Notation	\(100\{X>4\}100\)
Fast-growing hierarchy 	\(f_{\varepsilon_3}(100)\)
Hardy hierarchy 	\(H_{\varepsilon_3}(100)\)
Slow-growing hierarchy 	\(g_{\vartheta(\varepsilon_{\Omega4+1})}(100)\)
== Sources ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Epsilon level