The tethrapeton (also called tethrapenteract) is equal to E100#^^#^#5 = 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 tethrathoth and the root "peton" from "polypeton". Polypeton is the name for a 6-dimensional figure and 6-D figures are constructed from multiple 5-D figures (hence the "poly"), so a "peton" can be considered a 5-dimensional figure.
Approximations in other notations
| Notation | Approximation |
|---|---|
| BEAF | \(X \uparrow^6 101\ \&\ 100\) |
| Bird's array notation | \(\{100,6 [1 [2 \neg 2] 2] 2\}\) |
| Hyperfactorial array notation | \(100![1] w/8\) |
| Fast-growing hierarchy | \(f_{\varphi(5,0)}(99)\) |
| Hardy hierarchy | \(H_{\varphi(5,0)}(100)\) |
| Slow-growing hierarchy | \(g_{\vartheta(\varphi(5,\Omega+1))}(100)\) |
Sources
- ↑ Saibian, Sbiis. 4.3.7 - Extended Cascading-E Numbers Part I. Retrieved 2016-12-19.