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The terrible-tethrathothiturreted-tethrathoth is equal to E100#^^#>(#^^#)^^#100 using Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.

DeepLineMadom calls this number dustaculated-terrible-tethrathoth as his alternative naming system. [2]

Approximations in other notations[]

Notation Approximation
BEAF X^^X^^2X & 100
Bird's array notation {10,100[1\2[1\2]2]2}
Fast-growing hierarchy \(f_{\varepsilon_{\varepsilon_1}}(100)\)
Hardy hierarchy \(H_{\varepsilon_{\varepsilon_1}}(101)\)
Slow-growing hierarchy ???

Sources[]

  1. Saibian, Sbiis. 4.3.7 Extended Cascading-E Numbers Part IOne to Infinity. Retrieved 2017-03-03.
  2. ExE ultimate googolism generator - Milestone section 2. Retrieved 1st May, 2023
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