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The tethricubiculator is equal to E100#^^#>###100 using Extended cascading-E notation.[1] The term was coined by Sbiis Saibian.

Etymology[]

The name of this number comes from the infix "cubic" and the number tethriterator.

Approximations in other notations[]

Notation Approximation
BEAF X^^(X^4) & 100
Bird's array notation {10,100[1\1[4]2]2}
Fast-growing hierarchy \(f_{\varepsilon_{\omega^3} }(100)\)
Hardy hierarchy \(H_{\varepsilon_{\omega^3} }(100)\)
Slow-growing hierarchy ???

Sources[]