Grand pentacthulhum, grand tethrarxihect or tethrarxitethrarxihect is equal to E100#^^^#100#2 = E100(#^^^pentacthulhum)100 in Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.


Notation Approximation
Bird's array notation {100,3,2[1 [1 ¬ 3] 2]2}
Fast-growing hierarchy \(f^2_{\varphi(1,0,0)}(100)\)

See also


  1. Saibian, Sbiis. 4.3.9 - Extended Cascading-E Numbers Part III (9010 - 11870). Retrieved 2018-11-10.
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