The pentacthulhum (also called tethrarxihect[1]) is equal to E100#^^^#100 = E100#^^#^^#...#^^#^^#100 (100 #'s) in Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.
Etymology
The name of this number is based on the words "pentation" and "Cthulhu".
Approximations in other notations
| Notation | Approximation |
|---|---|
| BEAF | \(\{X,X,1,2\}\ \&\ 100\) (weaker bound)
\(\{X,X,3\}\ \&\ 100 \) (stronger bound) |
| Bird's array notation | \(\{100,100[1[1\neg3]2]2\}\) |
| Hyperfactorial array notation | \(100![1(1)2]\) |
| Fast-growing hierarchy | \(f_{\Gamma_{0}}(99)\) |
| Hardy hierarchy | \(H_{\Gamma_{0}}(100)\) |
| Slow-growing hierarchy | \(g_{\vartheta(\Omega_2)}(100)\) |
Sources
- ↑ 1.0 1.1 Saibian, Sbiis. 4.3.9 - Extended Cascading-E Numbers Part III (9010 - 11870). Retrieved 2018-02-22.