Terrible terrible terrible tethracross

Terrible terrible terrible tethracross is equal to E100(((#^^##)^^#)^^#)^^#100 using Cascading-E notation. This term was coined by MtrgBMovies.MtrgBMovies' Tethrathoth Series Accessed 2023-03-20.
==Approximations==
Notation 	Approximation
Bird's array notation 	\(\{100,100 [1 \backslash 4 \backslash 2] 2\}\)
Fast-growing hierarchy	\(f_{\varepsilon_{\zeta_1+3}}(100)\)
== Sources ==
Category:Numbers
Category:Numbers by MtrgBMovies
Category:Extended Cascading-E numbers
Category:Binary phi level