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A sexdecillion[1] or sedecillion[2][3] is equal to 1051 in short scale, or 1096 in long scale.

In the long scale, 1051 is called octilliard, which is commonly used in France and Germany.

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

SuperJedi224 calls this number (in short scale) ter-bitillion[5].

Decimal[]

  • 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 - short scale
  • 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 - long scale

Examples[]

  • The volume of the milky way galaxy is about a sexdecillion cubic miles.[6]
  • The prefix tenazetta- multiplies by one sexdecillion.
  • The Earth is made up of about 1 sexdecillion, 330 quindecillion atoms.

Approximations[]

For short scale:

Notation Lower bound Upper bound
Scientific notation \(1\times10^{51}\)
Arrow notation \(10\uparrow51\)
Steinhaus-Moser Notation 33[3] 34[3]
Copy notation 9[51] 10[26]
Taro's multivariable Ackermann function A(3,166) A(3,167)
Pound-Star Notation #*(9,6,2,6,0,1)*6 #*(11,6,11)*13
BEAF {10,51}
Hyper-E notation E51
Bashicu matrix system (0)(0)(0)(0)[1539] (0)(0)(0)(0)[1540]
Hyperfactorial array notation 41! 42!
Fast-growing hierarchy \(f_2(162)\) \(f_2(163)\)
Hardy hierarchy \(H_{\omega^2}(162)\) \(H_{\omega^2}(163)\)
Slow-growing hierarchy \(g_{\omega^{\omega5+1}}(10)\)

For long scale:

Notation Lower bound Upper bound
Scientific notation \(1\times10^{96}\)
Arrow notation \(10\uparrow96\)
Steinhaus-Moser Notation 55[3] 56[3]
Copy notation 9[96] 1[97]
Taro's multivariable Ackermann function A(3,315) A(3,316)
Pound-Star Notation #*(2,11,1,3,7,8)*10 #*(7,9,4,3,5,6,4)*8
BEAF {10,96}
Hyper-E notation E96
Bashicu matrix system (0)(0)(0)(0)(0)[1000]
Hyperfactorial array notation 67! 68!
Fast-growing hierarchy \(f_2(310)\) \(f_2(311)\)
Hardy hierarchy \(H_{\omega^2}(310)\) \(H_{\omega^2}(311)\)
Slow-growing hierarchy \(g_{\omega^{\omega9+6}}(10)\)

List of prefixed numbers derived from decillion[]

Name Short scale Long scale
undecillion 1036 1066
duodecillion 1039 1072
tredecillion 1042 1078
quattuordecillion 1045 1084
quindecillion 1048 1090
sexdecillion 1051 1096
septendecillion 1054 10102
octodecillion 1057 10108
novemdecillion 1060 10114

Sources[]

  1. Sexdecillion at Wolfram MathWorld
  2. Conway and Guy (1995) "The book of Numbers" Copernicus
  3. Fish, Conway's zillion numbers, 2022/02/20.
  4. Russ Rowlett Names for Large Numbers Archived 2006-01-10.
  5. -Illions - Almost Infinite
  6. Saibian, Sbiis. Larger numbers in science.

See also[]

  • sexdecyllion
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
Numbers By SuperJedi224

Fibonacci Numbers

Pound-Star Notation

Based on the Faxul

Googovipleccix family

Graham Sequence Numbers

-Illion numbers

"-Illion" numbers by SuperJedi224

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