In X-Sequence Hyper-Exponential Notation, the Hyperazetathoth is equal to 100{X>>X}100[1]. The name (a combination of Hyperathoth and the ordinal ζ0) was coined by SuperJedi224.

It is comparable to Saibian's Tethracross.


  1. [1]


Notation Approximation
Extended Cascading-E notation \(E100\#\text{^^}\#\# 100\)
Fast-growing hierarchy \(f_{\zeta_0}(100)\)
Hardy hierarchy \(H_{\zeta_0}(100)\)

See AlsoEdit

Numbers By SuperJedi224

Fibonacci Numbers

Pound-Star Notation

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