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A quinquagintillion is equal to 10153 in the short scale, or \(10^{300}\) in the long scale by Conway and Guy's naming system.[1][2][3][4]

Jonathan Bowers coined quinquagintillion for this number.[5]

In the long scale which is commonly used in France and Germany, 10153 is called quinvigintilliard.

Aarex Tiaokhiao calls 10300 millesimal-googol.[6]

Decimal Expansion[]

Short scale

1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Long scale

1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Approximations[]

For short scale:

Notation Lower bound Upper bound
Scientific notation \(1\times10^{153}\)
Arrow notation \(10\uparrow153\)
Steinhaus-Moser Notation 80[3] 81[3]
Copy notation 9[153] 10[77]
Taro's multivariable Ackermann function A(3,505) A(3,506)
Pound-Star Notation #*((670))*8 #*((671))*8
BEAF {10,153}
Hyper-E notation E153
Bashicu matrix system (0)(0)(0)(0)(0)[60429] (0)(0)(0)(0)(0)[60430]
Hyperfactorial array notation 97! 98!
Fast-growing hierarchy \(f_2(499)\) \(f_2(500)\)
Hardy hierarchy \(H_{\omega^2}(499)\) \(H_{\omega^2}(500)\)
Slow-growing hierarchy \(g_{\omega^{\omega^2+\omega5+3}}(10)\)

For long scale:

Notation Lower bound Upper bound
Scientific notation \(1\times10^{300}\)
Arrow notation \(10\uparrow300\)
Steinhaus-Moser Notation 139[3] 140[3]
Copy notation 9[300] 1[301]
Taro's multivariable Ackermann function A(3,993) A(3,994)
Pound-Star Notation #*((226))*11 #*((227))*11
BEAF {10,300}
Hyper-E notation E300
Bashicu matrix system (0)(0)(0)(0)(0)(0)[48696] (0)(0)(0)(0)(0)(0)[48697]
Hyperfactorial array notation 166! 167!
Fast-growing hierarchy \(f_2(986)\) \(f_2(987)\)
Hardy hierarchy \(H_{\omega^2}(986)\) \(H_{\omega^2}(987)\)
Slow-growing hierarchy \(g_{\omega^{\omega^23}}(10)\)

Examples[]

  • According to Cookiefonster, a neutrino is smaller than the Plank length, which is smaller than the observable universe devided into one quinquagintillion pieces.[7] However, Cookiefonster does not cite a reliable source for the estimation of the size of a neutrino, even though it is clarified that the size is not confirmed.

List of prefixed numbers derived from quinquagintillion[]

Name Short scale Long scale
unquinquagintillion 10156 10306
duoquinquagintillion 10159 10312
tresquinquagintillion 10162 10318
quattuorquinquagintillion 10165 10324
quinquinquagintillion 10168 10330
sesquinquagintillion 10171 10336
septenquinquagintillion 10174 10342
octoquinquagintillion 10177 10348
novenquinquagintillion 10180 10354

Sources[]

See also[]

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
1,000–1024: 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
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