The enneicosillion is equal to \(10^{3\times 10^{87}+3}\) or \(10^{3\text{ octovigintillion }3}\).[1] It is defined using Sbiis Saibian's generalization of Jonathan Bowers' -illion system.
Approximations[]
Notation | Lower bound | Upper bound |
---|---|---|
Arrow notation | \(1000\uparrow(1+10\uparrow87)\) | |
Down-arrow notation | \(1000\downarrow\downarrow30\) | \(34\downarrow\downarrow58\) |
Steinhaus-Moser Notation | 50[3][3] | 51[3][3] |
Copy notation | 2[2[88]] | 3[3[88]] |
H* function | H(H(28)) | |
Taro's multivariable Ackermann function | A(3,A(3,289)) | A(3,A(3,290)) |
Pound-Star Notation | #*((1))*(7,6,5,5,4)*6 | #*((1))*(8,6,5,5,4)*6 |
BEAF | {1000,1+{10,87}} | |
Hyper-E notation | E(3+3E87) | |
Bashicu matrix system | (0)(1)[16] | (0)(1)[17] |
Hyperfactorial array notation | (62!)! | (63!)! |
Fast-growing hierarchy | \(f_2(f_2(284))\) | \(f_2(f_2(285))\) |
Hardy hierarchy | \(H_{\omega^22}(284)\) | \(H_{\omega^22}(285)\) |
Slow-growing hierarchy | \(g_{\omega^{\omega^{\omega8+7}3+3}}(10)\) |