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A duovigintillion or viginti-deutillion [1] is equal to 1069 in America, or 10132 in France and Germany.[2][3]

In the long scale, 1069 is called undecilliard, which is commonly used in France and Germany.

This number is also called icositrillion in Russ Rowlett's Greek-based naming system.[4]

Aarex Tiaokhiao gave the name vigitretillion, referring to the value of this number.[5]

The prefix gigama- has meaning of one duovigintillion.

## Approximations

For short scale:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{69}$$
Arrow notation $$10\uparrow69$$
Steinhaus-Moser Notation 42[3] 43[3]
Copy notation 9[69] 10[35]
Taro's multivariable Ackermann function A(3,226) A(3,227)
Pound-Star Notation #*(3,3,4,6)*13 #*(11,0,3,0,6,1)*8
BEAF {10,69}
Hyper-E notation E69
Bashicu matrix system (0)(0)(0)(0)[20535] (0)(0)(0)(0)[20536]
Hyperfactorial array notation 52! 53!
Fast-growing hierarchy $$f_2(221)$$ $$f_2(222)$$
Hardy hierarchy $$H_{\omega^2}(221)$$ $$H_{\omega^2}(222)$$
Slow-growing hierarchy $$g_{\omega^{\omega6+9}}(10)$$

For long scale:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{132}$$
Arrow notation $$10\uparrow132$$
Steinhaus-Moser Notation 71[3] 72[3]
Copy notation 9[132] 1[133]
Taro's multivariable Ackermann function A(3,435) A(3,436)
Pound-Star Notation #*(13,11,8,6,10,4,5,4)*9 #*(14,11,8,6,10,4,5,4)*9
BEAF {10,132}
Hyper-E notation E132
Bashicu matrix system (0)(0)(0)(0)(0)[13335] (0)(0)(0)(0)(0)[13336]
Hyperfactorial array notation 86! 87!
Fast-growing hierarchy $$f_2(429)$$ $$f_2(430)$$
Hardy hierarchy $$H_{\omega^2}(429)$$ $$H_{\omega^2}(430)$$
Slow-growing hierarchy $$g_{\omega^{\omega^2+\omega3+2}}(10)$$

## List of prefixed numbers derived from vigintillion

Name Short scale Long scale
unvigintillion 1066 10126
duovigintillion 1069 10132
trevigintillion 1072 10138
quattuorvigintillion 1075 10144
quinvigintillion 1078 10150
sexvigintillion 1081 10156
septenvigintillion 1084 10162
octovigintillion 1087 10168
novemvigintillion 1090 10174

## Sources

Main article: -illion
1–9: million · billion · trillion · quadr · quint · sext · sept · oct · non
10–19: decillion · undec · duodec · tredec · quattuordec · quindec · sexdec · septendec · octodec · novemdec
20–29: vigintillion · unvigint · duovigint · trevigint · quattuorvigint · quinvigint · sexvigint · septenvigint · octovigint · novemvigint
30–39: trigintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
40–49: quadragintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
50–59: quinquagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
60–69: sexagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
70–79: septuagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
80–89: octogintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
90–99: nonagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
100–900: centillion · unviginticent · ducent · trecent · duotrigintatrecent · quadringent · quingent · sescent · septuagintisescent · septingent · octingent · nongent
1,000–1024: millillion · dumill · trimill · quadrimill · quinmill · sexmill · septimill · octimill · nonimill · myr · centimill · micr · nan · pic · femt · att · zept · yoct