Octa-icosaxis

Octa-icosaxis is equal to \(10\uparrow^{19}8\) or 10 21-ated to 8. This term was coined by YouTuber MultiArrest91.MultiArrest91, Numbers Tridecal to Googontritol Accessed 2022-10-09.
==Approximations==
Notation 	Approximation
Hyper-E notation 	\(E1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#1\#8\) (exact)
BEAF 	\(\{10,8,19\}\) (exact)
Bird's array notation 	\(\{10,8,19\}\) (exact)
Chained arrow notation	\(10\rightarrow8\rightarrow 19\) (exact)
Fast-growing hierarchy	\(f_{19}^8(10)\)
==Sources==
==See also==
Category:Numbers
Category:Up-arrow notation level
Category:Videos