Enicosa-petaxis

Enicosa-petaxis is equal to \(10\uparrow\uparrow\uparrow\uparrow21\) or 10 hexated to 21. This term was coined by YouTuber NO!NO!, Numbers 10^^^10 to a Geegol Accessed 2021-05-07.
==Approximations==
Notation 	Approximation
Hyper-E notation 	\(E1\#1\#1\#21\)
BEAF 	\(\{10,21,4\}\) (exact)
Bird's array notation 	\(\{10,21,4\}\) (exact)
Chained arrow notation	\(10\rightarrow 21\rightarrow 4\) (exact)
==Sources==
==See also==
Category:Numbers
Category:Up-arrow notation level
Category:Videos