Icosi-aelgathor

Icosi-aelgathor (also known as icosaelgathor) is equal to E100#^#^#^#20 = E100(#^#^#^20)100 = E100#^#^####...####100 (with 20 consecutive #'s) using Cascading-E Notation. The term was coined by Sbiis Saibian. This number belongs to the dekaelgathor regiment. Icosi-aelgathor is comparable to vigintongulus.
== Etymology ==
The name of this number is based on the prefix "icosa-" and the number "godgathor".
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,20 ((1)1) 2\}\)
Bird's array notation 	\(\{100,20 [1[2]2] 2\}\)
Hyperfactorial array notation	\(100![1,[1,[1,1,21],1,2],1,3]\)
Fast-growing hierarchy 	\(f_{\omega^{\omega^{\omega^{20}}}}(100)\)
Hardy hierarchy 	\(H_{\omega^{\omega^{\omega^{\omega^{20}}}}}(100)\)
Slow-growing hierarchy 	\(g_{\vartheta(\Omega^{\Omega^{(\Omega^{19})\omega}})}(100)\)
== Sources ==
Category: Numbers
Category: Numbers by Sbiis Saibian
Category: Cascading-E numbers
Category:Double exponentiated polynomial omega level