The pentacthulcross is equal to E100#^^^##100 in Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.
Etymology
The name of this number is based on the number pentacthulhum and the word "cross".
Approximations in other notations
| Notation | Approximation |
|---|---|
| BEAF | \(\{X,X,2,2\}\ \&\ 100\) |
| Bird's array notation | \(\{100,100[1[1 \neg 3]1 \backslash 2]2\}\) |
| Hyperfactorial array notation | \(100![1(1)1,1,2,2]\) |
| Fast-growing hierarchy (with this system of fundamental sequences) | \(f_{\varphi(1,1,0)}(99)\) |
| Hardy hierarchy | \(H_{\varphi(1,1,0)}(100)\) |
| Slow-growing hierarchy | \(g_{\vartheta(\Omega_2+\vartheta_1(\Omega_2+1))}(100)\) |
Sources
- ↑ Saibian, Sbiis. 4.3.4 - Forging Extended Cascading-E Numbers Part II. Retrieved May 23, 2014.
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