Megapentofaxul

The megapentofaxul is equal to kilopentofaxul!3 or ((200!3)!3)!3 in Hyperfactorial array notation. The term was coined by Lawrence Hollom.Lawrence Hollom's large number site
=== Etymology ===
The name of this number is based on SI prefix "mega-" and the number "pentofaxul".
===Approximations in other notations===
Notation 	Approximation
Hyper-E notation 	\(\textrm{E}10\#10\#10\#197\#3\)
Up-arrow notation 	\(10 \uparrow^4 (10 \uparrow^4 (10 \uparrow^4 198))\)
Chained arrow notation	\(10 \rightarrow (10 \rightarrow (10 \rightarrow 198 \rightarrow 4) \rightarrow 4) \rightarrow 4\)
BEAF 	\(\{10,\{10,\{10,198,4\},4\},4\}\)
Fast-growing hierarchy	\(f_5(f_5(f_5(200)))\)
Hardy hierarchy 	\(H_{(\omega^5)3}(200)\)
Slow-growing hierarchy	\(g_{\eta_{\eta_{\eta_0}}}(200)\)
===Sources===
=== See also ===
Category:Numbers
Category:Numbers by Lawrence Hollom
Category:Factorial numbers
Category:Up-arrow notation level
Category:Powers of 200