Tethracuborfact

Tethracuborfact (also called hecato-tethracubor) is equal to E100(#^^###)^#100 using Extended Cascading-E Notation. The term was coined by Sbiis Saibian. This number belongs to the tethracubor regiment.
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,101(X \uparrow\uparrow\uparrow\uparrow X*X) 2\}\)Using particular notation \(\{a,b (X \uparrow\uparrow X) 2\}\) for \(X \uparrow\uparrow b\ \&\ a\) (weak bound)
Bird's array notation 	{100,101[1[1\1\2]1\1\2]2}
Strong array notation 	s(100,101{1{1`1`1`2}1`1`1`2}2)
Fast-growing hierarchy	\(f_{{\varphi(3,0)}^{\omega}}(100)\)
Hardy hierarchy 	\(H_{\varphi(3,0)^{\varphi(3,0)^{\omega}}}(100)\)
Slow-growing hierarchy	???
== Sources ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Binary phi level
Category:Tethracubor regiment