Eneninto-tethrateron is equal to E100(#^^####)^#90 using Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian. This number belongs to the tethrateron regiment.


Notation Approximation
Bird's array notation \(\{100,90[2 \backslash1 \backslash 1 \backslash 1 \backslash 2]2\}\)
Fast-growing hierarchy \(f_{\omega^{\omega^{\varphi(4,0)+1} }[90]}(100)\)
Hardy hierarchy \(H_{\omega^{\omega^{\omega^{\varphi(4,0)+1} }[90]} }(100)\)


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