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A novenseptuagintillion is equal to 10240 in the short scale, or 10474 in the long scale by Conway and Guy's naming system.[1][2][3][4] It may also be called as novemseptuagintillion in the modified Conway's system.[4]

In the long scale which is commonly used in France and Germany, 10240 is called quadragintillion.

Wikia user NumLynx gave the name octogintisand for this number's short scale value.[5]

Approximations[]

For short scale:

Notation Lower bound Upper bound
Scientific notation \(1\times10^{240}\)
Arrow notation \(10\uparrow240\)
Steinhaus-Moser Notation 116[3] 117[3]
Copy notation 9[240] 1[241]
Taro's multivariable Ackermann function A(3,794) A(3,795)
Pound-Star Notation #*((187))*10 #*((188))*10
BEAF {10,240}
Hyper-E notation E240
Bashicu matrix system (0)(0)(0)(0)(0)(0)[5623] (0)(0)(0)(0)(0)(0)[5624]
Hyperfactorial array notation 139! 140!
Fast-growing hierarchy \(f_2(787)\) \(f_2(788)\)
Hardy hierarchy \(H_{\omega^2}(787)\) \(H_{\omega^2}(788)\)
Slow-growing hierarchy \(g_{\omega^{\omega^22+\omega4}}(10)\)

For long scale:

Notation Lower bound Upper bound
Scientific notation \(1\times10^{474}\)
Arrow notation \(10\uparrow474\)
Steinhaus-Moser Notation 205[3] 206[3]
Copy notation 9[474] 1[475]
Taro's multivariable Ackermann function A(3,1571) A(3,1572)
Pound-Star Notation #*((5716))*13 #*((5717))*13
BEAF {10,474}
Hyper-E notation E474
Bashicu matrix system (0)(0)(0)(0)(0)(0)(0)[5048] (0)(0)(0)(0)(0)(0)(0)[5049]
Hyperfactorial array notation 242! 243!
Fast-growing hierarchy \(f_2(1563)\) \(f_2(1564)\)
Hardy hierarchy \(H_{\omega^2}(1563)\) \(H_{\omega^2}(1564)\)
Slow-growing hierarchy \(g_{\omega^{\omega^24+\omega7+4}}(10)\)

List of prefixed numbers derived from septuagintillion[]

Name Short scale Long scale
unseptuagintillion 10216 10426
duoseptuagintillion 10219 10432
treseptuagintillion 10222 10438
quattuorseptuagintillion 10225 10444
quinseptuagintillion 10228 10450
seseptuagintillion 10231 10456
septenseptuagintillion 10234 10462
octoseptuagintillion 10237 10468
novenseptuagintillion 10240 10474

Sources[]

  1. Conway and Guy. (1995) "The book of Numbers" Copernicus
  2. Robert Munafo The Conway-Wechsler System. Retrieved 2023-02-05.
  3. Steve Olsen Big-Ass Numbers. Retrieved 2023-02-05.
  4. 4.0 4.1 Fish Conway's zillion numbers. Retrieved 2023-02-05.
  5. NumLynx's Large Numbers

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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