A tentaggoogol or novenducentillion is equal to \(10^{630}\).[1]
Decimal expansion
1000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Approximations
| Notation | Lower bound | Upper bound |
|---|---|---|
| Scientific notation | \(1\times10^{630}\) | |
| Arrow notation | \(10\uparrow630\) | |
| Chained arrow notation | \(10→630\) | |
| Steinhaus-Moser Notation | 260[3] | 261[3] |
| Copy notation | 9[630] | 1[631] |
| Taro's multivariable Ackermann function | A(3,2089) | A(3,2090) |
| Pound-Star Notation | #*((1259))*15 | #*((1260))*15 |
| BEAF | {10,630} | |
| Bird's array notation | {10,630} | |
| Strong array notation | s(10,630) | |
| Hyper-E notation | E630 | |
| Hyperfactorial array notation | 306! | 307! |
| Fast-growing hierarchy | \(f_2(2\,081)\) | \(f_2(2\,082)\) |
| Hardy hierarchy | \(H_{\omega^2}(2\,081)\) | \(H_{\omega^2}(2\,082)\) |
| Slow-growing hierarchy | \(g_{\omega^{\omega^{2}6+\omega\times 3}}(10)\) | |