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

YouTuber Douglas Shamlin Jr calls this number tethracruxigodgathor.[2]

Approximations in other notations[]

Notation Approximation
BEAF \(\{100,100(X \uparrow\uparrow\uparrow X \times X^X) 2\}\)[3] (weak bound)

\(\{100,100(X \uparrow \uparrow X^2 \times X^X)2\}\)[3] (strong bound)

Bird's array notation {100, 100 [1, 2 \ 1 \ 2] 2}
Fast-growing hierarchy (using Veblen's fundamental sequences) \(f_{\zeta_0^{\omega^{\omega}}}(100)\)
Hardy hierarchy \(H_{\zeta_0^{\zeta_0^{\omega^{\omega}}}}(100)\)
Slow-growing hierarchy ???

Sources[]

  1. Saibian, Sbiis. 4.3.7 Extended Cascading-E Numbers Part IOne to Infinity. Retrieved 2017-01-02.
  2. D. Shamlin Jr., Re-reupload | List of large numbers 2020 version (Reuploaded by cloudytheconqueror). Accessed 2022-10-09.
  3. 3.0 3.1 Using particular notation \(\{a,b (A) 2\} = A\ \&\ a\) with prime b.