- Not to be confused with octahectillion.
Octehectillion is equal to \(10^{3\cdot10^{324} + 3}\).[1] It is defined using Sbiis Saibian's generalization of Jonathan Bowers' -illion system.
Approximations[]
Notation | Lower bound | Upper bound |
---|---|---|
Arrow notation | \(1000\uparrow(1+10\uparrow324)\) | |
Down-arrow notation | \(1000\downarrow\downarrow109\) | \(737\downarrow\downarrow114\) |
Steinhaus-Moser Notation | 148[3][3] | 149[3][3] |
Copy notation | 2[2[325]] | 3[3[325]] |
H* function | H(H(107)) | |
Taro's multivariable Ackermann function | A(3,A(3,1076)) | A(3,A(3,1077)) |
Pound-Star Notation | #*((1))*((4))*9 | #*((1))*((5))*9 |
BEAF | {1000,1+{10,324}} | |
Hyper-E notation | E(3+3E324) | |
Bashicu matrix system | (0)(1)[32] | (0)(1)[33] |
Hyperfactorial array notation | (176!)! | (177!)! |
Fast-growing hierarchy | \(f_2(f_2(1069))\) | \(f_2(f_2(1070))\) |
Hardy hierarchy | \(H_{\omega^22}(1069)\) | \(H_{\omega^22}(1070)\) |
Slow-growing hierarchy | \(g_{\omega^{\omega^{\omega^23+\omega2+4}3+3}}(10)\) |