Heptaelgathorsid is equal to E100(#^#^#^8)6 using Cascading-E Notation.[1] The term was coined by Sbiis Saibian. This number belongs to the heptaelgathor regiment.


Notation Approximation
BEAF {100,6(0,0,0,0,0,0,0,0,1)2}
Bird's array notation {100,6[1,1,1,1,1,1,1,1,2]2}
Fast-growing hierarchy \(f_{\omega^{\omega^{\omega^8}}[6]}(100)\)
Hardy hierarchy \(H_{\omega^{\omega^{\omega^{\omega^8}}}[6]}(100)\)
Slow-growing hierarchy \(g_{\vartheta(\Omega^{\Omega^{\Omega^7 \omega}})[6]}(100)\)


It is likely pronounced as so:


  1. Saibian, Sbiis. 4.3.5 Cascading-E NumbersOne to Infinity. Retrieved 2016-09-09.
Community content is available under CC-BY-SA unless otherwise noted.