The epi-bitillion is equal to H(27) = H(128) = 10387, where H(x) = 103x+3.[1] It is called octoviginticentillion in the short scale. The term was coined by SuperJedi224.

Decimal expansion

1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Approximations

Notation Lower bound Upper bound
Scientific notation \(1\times10^{387}\)
Arrow notation \(10\uparrow387\)
Steinhaus-Moser Notation 172[3] 173[3]
Copy notation 9[387] 10[194]
Chained arrow notation \(10→387\)
Taro's multivariable Ackermann function A(3,1282) A(3,1283)
Pound-Star Notation #*((1904))*12 #*((1905))*12
BEAF {10,387}
Hyper-E notation E387
Bashicu matrix system (0)(0)(0)(0)(0)(0)(0)[1055] (0)(0)(0)(0)(0)(0)(0)[1056]
Bird's array notation {10,387}
Hyperfactorial array notation 205! 206!
Strong array notation s(10,387)
Fast-growing hierarchy \(f_2(1\,275)\) \(f_2(1\,276)\)
Hardy hierarchy \(H_{\omega^2}(1\,275)\) \(H_{\omega^2}(1\,276)\)
Slow-growing hierarchy \(g_{\omega^{\omega^23+\omega8+7}}(10)\)

Sources

See also

Numbers By SuperJedi224

Fibonacci Numbers

Pound-Star Notation

Based on the Faxul

Googovipleccix family

Graham Sequence Numbers

-Illion numbers

"-Illion" numbers by SuperJedi224

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