The quintuple-terrible tethrathoth is equal to E100#^^#>#6 using Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.

Approximations in other notations Edit

Notation Approximation
BEAF \(\{100,100 (X \uparrow\uparrow (6X)) 2\}\)[2]
Bird's array notation \(\{100,100 [1 \backslash 7] 2\}\)
X-Sequence Hyper-Exponential Notation \(100\{X>6\}100\)
Fast-growing hierarchy \(f_{\varepsilon_5}(100)\)
Hardy hierarchy \(H_{\varepsilon_5}(100)\)
Slow-growing hierarchy \(g_{\vartheta(\varepsilon_{\Omega6+1})}(100)\)

Sources Edit

  1. Saibian, Sbiis. 4.3.7 Extended Cascading-E Numbers Part IOne to Infinity. Retrieved 2017-02-18.
  2. Using particular notation \(\{a,b (A) 2\} = A\ \&\ a\) with prime b.

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