Ogdontaelgathor

Ogdontaelgathor is equal to E100(#^#^#^80)100 = E100#^#^#^#80 using Cascading-E Notation. The term was coined by Sbiis Saibian. Ogdontaelgathor is comparable to octogintongulus.
== Etymology ==
The name of this number is based on the prefix "ogdonta-" and the number "godgathor".
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,80 ((1)1) 2\}\)
Bird's array notation 	\(\{100,80 [1[2]2] 2\}\)
Hyperfactorial array notation	\(100![1,[1,[1,1,81],1,2],1,3]\)
Fast-growing hierarchy 	\(f_{\omega^{\omega^{\omega^{80}}}}(100)\)
Hardy hierarchy 	\(H_{\omega^{\omega^{\omega^{\omega^{80}}}}}(100)\)
Slow-growing hierarchy 	\(g_{\theta(\Omega^{\Omega^{(\Omega^{79})\omega}})}(100)\)
== Sources ==
Category: Numbers
Category: Numbers by Sbiis Saibian
Category: Cascading-E numbers
Category:Double exponentiated polynomial omega level