Ogdacthulhum

Ogdacthulhum (also called heptacthularxihect) is equal to E100#^^^^^^#100 = E100#{6}#100 in Extended Cascading-E Notation. The term was coined by Sbiis Saibian.
==Etymology==
The name of this number is based on the words "octation" and "".
== Approximations in other notations ==
Notation 	Approximation
BEAF (intended) (non-climbing)	\(\{X,X,1,5\}\ \&\ 100\)
Bird's array notation 	\(\{100,100 [1 [1\neg3] 1 [1\neg3] 1 [1\neg3] 1 [1\neg3] 2] 2\}\)
Hyperfactorial array notation 	\(100![1(1)1(1)1(1)1(1)2]\)
Fast-growing hierarchy 	\(f_{\varphi(4,0,0)}(99)\)
Hardy hierarchy 	\(H_{\varphi(4,0,0)}(100)\)
Slow-growing hierarchy 	\(g_{\vartheta(\Omega_{2}4)}(100)\)
==Sources==
ru:Огдактухлум
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Bachmann's collapsing level
Category:Hexacthulhum series