Duoquadragintillion

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A duoquadragintillion is equal to 10¹²⁹ in the short scale, or \(10^{252}\) in the long scale by Conway and Guy's naming system.

Sbiis Saibian says that Jonathan Bowers coined doequadragintillion for this number.

In the long scale which is commonly used in France and Germany, \(10^{129}\) is called unvigintilliard.

Approximations

For short scale:

Notation	Lower bound	Upper bound
Scientific notation	\(1\times10^{129}\)
Arrow notation	\(10\uparrow129\)
Steinhaus-Moser Notation	69[3]	70[3]
Copy notation	9[129]	10[65]
Taro's multivariable Ackermann function	A(3,425)	A(3,426)
Pound-Star Notation	#*(3,10,8,1,5,9,8,2)*9	#*(4,10,8,1,5,9,8,2)*9
BEAF	{10,129}
Hyper-E notation	E129
Bashicu matrix system	(0)(0)(0)(0)(0)[10746]	(0)(0)(0)(0)(0)[10747]
Hyperfactorial array notation	85!	86!
Fast-growing hierarchy	\(f_2(419)\)	\(f_2(420)\)
Hardy hierarchy	\(H_{\omega^2}(419)\)	\(H_{\omega^2}(420)\)
Slow-growing hierarchy	\(g_{\omega^{\omega^2+\omega2+9}}(10)\)

For long scale:

Notation	Lower bound	Upper bound
Scientific notation	\(1\times10^{252}\)
Arrow notation	\(10\uparrow252\)
Steinhaus-Moser Notation	120[3]	121[3]
Copy notation	9[252]	1[253]
Taro's multivariable Ackermann function	A(3,834)	A(3,835)
Pound-Star Notation	#*((801))*10	#*((802))*10
BEAF	{10,252}
Hyper-E notation	E252
Bashicu matrix system	(0)(0)(0)(0)(0)(0)[8659]	(0)(0)(0)(0)(0)(0)[8660]
Hyperfactorial array notation	145!	146!
Fast-growing hierarchy	\(f_2(827)\)	\(f_2(828)\)
Hardy hierarchy	\(H_{\omega^2}(827)\)	\(H_{\omega^2}(828)\)
Slow-growing hierarchy	\(g_{\omega^{\omega^22+\omega5+2}}(10)\)

List of prefixed numbers derived from quadragintillion

Name	Short scale	Long scale
unquadragintillion	10126	10246
duoquadragintillion	10129	10252
tresquadragintillion	10132	10258
quattuorquadragintillion	10135	10264
quinquadragintillion	10138	10270
sesquadragintillion	10141	10276
septenquadragintillion	10144	10282
octoquadragintillion	10147	10288
novenquadragintillion	10150	10294

See also

Standard -illion numbers 10³ⁿ⁺³ (10⁶ⁿ)

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 · tresvigint · quattuorvigint · quinvigint · sesvigint · septemvigint · octovigint · novemvigint
30–39: trigintillion (un- · duo- · tres- · quattuor- · quin- · ses- · septen- · octo- · noven-)
40–49: quadragintillion (un- · duo- · tres- · quattuor- · quin- · ses- · septen- · octo- · noven-)
50–59: quinquagintillion (un- · duo- · tres- · quattuor- · quin- · ses- · septen- · octo- · noven-)
60–69: sexagintillion (un- · duo- · tre- · quattuor- · quin- · se- · septen- · octo- · noven-)
70–79: septuagintillion (un- · duo- · tre- · quattuor- · quin- · se- · septen- · octo- · noven-)
80–89: octogintillion (un- · duo- · tres- · quattuor- · quin- · sex- · septem- · octo- · novem-)
90–99: nonagintillion (un- · duo- · tre- · quattuor- · quin- · se- · septe- · octo- · nove-)
100–900: centillion · ducent · trecent · quadringent · quingent · sescent · septingent · octingent · nongent
1,000–10³⁰: millillion · dumill · dumillinonagintanongent · trimill · trimilliduotrigintatrecent · trimillisexoctogintaoctingent · quadrimill · quadrimilliquattuordecicent · quinmill · sexmill · septimill · octimill · nonimill · myr · decimilliquinsexagintasescent · dumyr · unquadragintamilliunquinquagintacent · centimill · micr · nan · pic · femt · att · zept · yoct · ront · quect