- Not to be confused with ennahectillion.
Ennehectillion is equal to \(10^{3\times 10^{327} + 3}\).[1] It is defined using Sbiis Saibian's generalization of Jonathan Bowers' -illion system.
Approximations[]
| Notation | Lower bound | Upper bound |
|---|---|---|
| Arrow notation | \(1000\uparrow(1+10\uparrow327)\) | |
| Down-arrow notation | \(1000\downarrow\downarrow110\) | \(456\downarrow\downarrow124\) |
| Steinhaus-Moser Notation | 149[3][3] | 150[3][3] |
| Copy notation | 2[2[328]] | 3[3[328]] |
| H* function | H(H(108)) | |
| Taro's multivariable Ackermann function | A(3,A(3,1086)) | A(3,A(3,1087)) |
| Pound-Star Notation | #*((1))*((5))*9 | #*((1))*((6))*9 |
| BEAF | {1000,1+{10,327}} | |
| Hyper-E notation | E(3+3E327) | |
| Bashicu matrix system | (0)(1)[32] | (0)(1)[33] |
| Hyperfactorial array notation | (178!)! | (179!)! |
| Fast-growing hierarchy | \(f_2(f_2(1079))\) | \(f_2(f_2(1080))\) |
| Hardy hierarchy | \(H_{\omega^22}(1079)\) | \(H_{\omega^22}(1080)\) |
| Slow-growing hierarchy | \(g_{\omega^{\omega^{\omega^23+\omega2+7}3+3}}(10)\) | |