The triple-terrible tethrathoth is equal to E100(((#^^#)^^#)^^#)^^#100 using Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.
Approximations in other notations[]
| Notation | Approximation |
|---|---|
| BEAF | \(\{100,100 (X \uparrow\uparrow (4X)) 2\}\)[2] |
| Bird's array notation | \(\{100,100 [1 \backslash 5] 2\}\) |
| X-Sequence Hyper-Exponential Notation | \(100\{X>4\}100\) |
| Fast-growing hierarchy | \(f_{\varepsilon_3}(100)\) |
| Hardy hierarchy | \(H_{\varepsilon_3}(100)\) |
| Slow-growing hierarchy | \(g_{\vartheta(\varepsilon_{\Omega4+1})}(100)\) |
Sources[]
- ↑ Saibian, Sbiis. 4.3.7 Extended Cascading-E Numbers Part I. One to Infinity. Retrieved 2017-02-18.
- ↑ Using particular notation \(\{a,b (A) 2\} = A\ \&\ a\) with prime b.