The thraelquarticgathor (also called thraelgathortetrifact) is equal to E100#^(#^###*####)100 using Cascading-E Notation.[1] The term was coined by Sbiis Saibian.

Approximations in other notations

Notation Approximation
BEAF \(\{100,100 (4,0,0,1) 2\}\)
Bird's array notation \(\{100,100 [5,1,1,2] 2\}\)
Hyperfactorial array notation ???
Fast-growing hierarchy \(f_{\omega^{\omega^{\omega^3 + 4}}}(100)\)
Hardy hierarchy \(f_{\omega^{\omega^{\omega^{\omega^3 + 4}}}}(100)\)
Slow-growing hierarchy \(g_{\theta(\Omega^{\Omega^{\Omega^3 + 3} + (\Omega^{\Omega^3}) \omega})}(100)\)

Sources

  1. Saibian, Sbiis. 4.3.5 Cascading-E NumbersOne to Infinity. Retrieved 2016-09-09.
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