Icosolus

The icosolus is equal to E100#20100 in Extended Hyper-E Notation. It is also equal to E100#^#20 in Cascading-E notation. The term was coined by Sbiis Saibian.
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,21 (1) 2\}\)
Bird's array notation 	\(\{100,21 [2] 2\}\)
Hyperfactorial array notation 	\(100![[1,100],98,18]\)
X-Sequence Hyper-Exponential Notation	\(100\{X^X\}19\)
Fast-growing hierarchy 	\(f_{\omega^{19}}(100)\)
Hardy hierarchy 	\(H_{\omega^{\omega^{19}}}(100)\)
Slow-growing hierarchy 	\(g_{\vartheta(\Omega^{18} \omega)}(100)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Hyper-E numbers
Category:Googol series
Category:Polynomial omega level