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A sexnonagintillion is equal to 10291 in America, or 10576 in France and Germany.[1]

In the long scale which is commonly used in France and Germany, 10291 is called octoquadragintilliard.

### ApproximationsEdit

For short scale:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{291}$$
Arrow notation $$10\uparrow291$$
Steinhaus-Moser Notation 136[3] 137[3]
Copy notation 9[291] 10[146]
Taro's multivariable Ackermann function A(3,963) A(3,964)
Pound-Star Notation #*((84))*11 #*((85))*11
BEAF {10,291}
Hyper-E notation E291
Bashicu matrix system (0)(0)(0)(0)(0)(0)[35226] (0)(0)(0)(0)(0)(0)[35227]
Hyperfactorial array notation 162! 163!
Fast-growing hierarchy $$f_2(956)$$ $$f_2(957)$$
Hardy hierarchy $$H_{\omega^2}(956)$$ $$H_{\omega^2}(957)$$
Slow-growing hierarchy $$g_{\omega^{\omega^22+\omega9+1}}(10)$$

For long scale:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{576}$$
Arrow notation $$10\uparrow576$$
Steinhaus-Moser Notation 241[3] 242[3]
Copy notation 9[576] 1[577]
Taro's multivariable Ackermann function A(3,1910) A(3,1911)
Pound-Star Notation #*((17))*15 #*((18))*15
BEAF {10,576}
Hyper-E notation E576
Bashicu matrix system (0)(1)[8] (0)(1)[9]
Hyperfactorial array notation 284! 285!
Fast-growing hierarchy $$f_2(1902)$$ $$f_2(1903)$$
Hardy hierarchy $$H_{\omega^2}(1902)$$ $$H_{\omega^2}(1903)$$
Slow-growing hierarchy $$g_{\omega^{\omega^25+\omega7+6}}(10)$$

### List of prefixed numbers derived from nonagintillionEdit

Name Short scale Long scale
unnonagintillion 10276 10546
duononagintillion 10279 10552
trenonagintillion 10282 10558
quattuornonagintillion 10285 10564
quinnonagintillion 10288 10570
sexnonagintillion 10291 10576
septennonagintillion 10294 10582
octononagintillion 10297 10588
novemnonagintillion 10300 10594

### Sources Edit

1. Very big numbers on Skynet