Duoctimevalka

Duoctimevalka is a googolism coined by SpongeTechX. It is equal to 2[2,8] using his Copy notationSTX Googology.
==Approximations in other notations==
Notation 	Approximation
Scientific notation 	\(10^{10^{10^{10^{10^{10^{22}}}}}}\)
Up-arrow notation 	\(17 \uparrow\uparrow 7\)
Chained arrow notation 	\(17 \rightarrow 7 \rightarrow 2\)
BEAF 	\(\{17,7,2\}\)
Hyperfactorial array notation	\(((((((22!)!)!)!)!)!)!\)
Fast-growing hierarchy 	\(f_2^6(69)\)
Hardy hierarchy 	\(H_{(\omega^2) 6}(65)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^{\omega^{\omega^{\omega^{22}}}}}}}(10)\)
== Sources ==
Category:Numbers by SpongeTechX
Category:Numbers
Category:Repdigit numbers
Category:Tetration level
Category:Copy notation