Heptalogialogue

The heptalogialogue is equal to E1#7#2 using Hyper-E notation. The term was coined by Sbiis Saibian. In arrow notation, this number is equal to \(10↑↑10↑↑7\).
== Etymology ==
The 2 parts of the name, heptalogia and logue means Heptalogue and \(10↑↑\text{n}\), which formed \(10↑↑10↑↑7\) when concentrated from left to right. So the full name indicates the ordinal index of the number.
== Approximations in other notations ==
Notation 	Approximation
Up-arrow notation 	\(10 \uparrow\uparrow 10 \uparrow\uparrow 7\) (exact)
Chained arrow notation 	\(10 \rightarrow (10 \rightarrow 7 \rightarrow 2) \rightarrow 2\) (exact)
BEAF 	\(\{10,\{10,7,2\},2\}\) (exact)
Hyperfactorial array notation	\(((((((13!)!)!)!)!)!)!1\)
Fast-growing hierarchy 	\(f_3(f_2^6(28))\)
Hardy hierarchy 	\(H_{\omega^3+(\omega^2) 6}(28)\)
Slow-growing hierarchy 	\(g_{\epsilon_{\omega^{\omega^{\omega^{\omega^{\omega^{\omega^{\omega}}}}}}}}(10)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Hyper-E numbers
Category:Tetration level