Dutetrated-tethracross

Dutetrated-tethracross is equal to E100(#^^##)^(#^^##)100 using Extended Cascading-E Notation. The term was coined by Sbiis Saibian.
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,100((X \uparrow\uparrow\uparrow X)^2) 2\}\)Using particular notation \(\{a,b (A) 2\} = A\ \&\ a\) with prime b. (non-climbing method)
\(\{100,100(X^{2X\uparrow\uparrow(X^2-1)}) 2\}\) (climbing method)
Bird's array notation 	{100, 100 [1 [1 \ 1 \ 2] 2 \ 1 \ 2] 2}
Fast-growing hierarchy (using Veblen's fundamental sequences)	\(f_{\varphi(0,\varphi(2,0)\times 2)}(100)\)\(=f_{\zeta_0^{\zeta_0}}(100)\)
Hardy hierarchy 	\(H_{\zeta_0^{\zeta_0}}(100)\)
Slow-growing hierarchy 	\(g_{\vartheta(\zeta_{\Omega 2}^{\zeta_{\Omega + 1}})}(100)\)
== Sources ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Binary phi level
Category:Tethracross regiment