Ogdo-tethriterator is equal to E100(#^^#>#)^#8 using Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian. This number belongs to the Tethriterator regiment.


Notation Approximation
Fast-growing hierarchy \(f_{\varepsilon_{\omega}^{8} }(100)\)
Hardy hierarchy \(H_{\varepsilon_{\omega}^{\varepsilon_\omega^{8}}}(100)\)


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