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Ento-tethrathoth is equal to E100(#^^#)^#9 using Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian. This number belongs to the Tethrathoth regiment.

Approximations in other notations[]

Notation Approximation
Hyperfactorial array notation \(100![1,1,9,1,2]\)
X-Sequence Hyper-Exponential Notation \(100\{(X\uparrow\uparrow X)^{9}\}100\)
Fast-growing hierarchy \(f_{\varepsilon_0^9}(100)\)
= \(f_{\omega^{\varepsilon_0 \times 9}}(100)\)
Hardy hierarchy \(H_{\varepsilon_0^{\varepsilon_0^9}}(100)\)
= \(H_{\omega^{\omega^{\varepsilon_0 \times 9}}}(100)\)
Slow-growing hierarchy \(g_{\vartheta(\varepsilon_{\Omega2}^9\varepsilon_{\Omega+1})}(100)\)

Sources[]

  1. Saibian, Sbiis. 4.3.7 Extended Cascading-E Numbers Part IOne to Infinity. Retrieved 2017-01-02.
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