- Not to be confused with hexahectillion.
Hexehectillion is equal to \(10^{3\times 10^{318} + 3}\).[1] It is defined using Sbiis Saibian's generalization of Jonathan Bowers' -illion system. It is the Quincentillion-th -illion.
Approximations[]
| Notation | Lower bound | Upper bound |
|---|---|---|
| Arrow notation | \(1000\uparrow(1+10\uparrow318)\) | |
| Down-arrow notation | \(1000\downarrow\downarrow107\) | \(733\downarrow\downarrow112\) |
| Steinhaus-Moser Notation | 145[3][3] | 146[3][3] |
| Copy notation | 2[2[319]] | 3[3[319]] |
| H* function | H(H(105)) | |
| Taro's multivariable Ackermann function | A(3,A(3,1056)) | A(3,A(3,1057)) |
| Pound-Star Notation | #*((1))*((2))*9 | #*((1))*((3))*9 |
| BEAF | {1000,1+{10,318}} | |
| Hyper-E notation | E(3+3E318) | |
| Bashicu matrix system | (0)(1)[32] | (0)(1)[33] |
| Hyperfactorial array notation | (174!)! | (175!)! |
| Fast-growing hierarchy | \(f_2(f_2(1049))\) | \(f_2(f_2(1050))\) |
| Hardy hierarchy | \(H_{\omega^22}(1049)\) | \(H_{\omega^22}(1050)\) |
| Slow-growing hierarchy | \(g_{\omega^{\omega^{\omega^23+\omega+8}3+3}}(10)\) | |