Novenonagintaoctingentillion

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"Xenillion" redirects here. It is not to be confused with xennillion.

A novenonagintaoctingentillion is equal to \(10^{2700}\) in the short scale and \(10^{5394}\) in the long scale by the Conway and Guy's naming system^[1]^[2]^[3]^[4]^[5] as it is the 899th -illion number.

In the long scale, \(10^{2700}\) is called quinquagintaquadringentillion.^[6]

NumLynx named short-scale value of this number as nongentisand, which is equal 1000⁹⁰⁰ = 10²⁷⁰⁰. ^[7]

RedBandServerYT calls this number xonesimal-googol.^[8]

BlankEntity calls this number Xenillion.^[9]

Approximations[]

For the short scale:

Notation	Lower bound	Upper bound
Scientific notation	\(1\times10^{2700}\) (exact)
Arrow notation	\(10\uparrow 2700\) (exact)
Steinhaus-Moser Notation	912[3]	913[3]
Chained arrow notation	\(10\rightarrow 2700\) (exact)
Taro's multivariable Ackermann function	A(3,8966)	A(3,8967)
BEAF & Bird's array notation	{10,2700} (exact)
Hyper-E notation	E2700 (exact)
s(n) map	\(s(1)^3(\lambda x.x+1)(9)\)	\(s(1)^3(\lambda x.x+1)(10)\)
m(n) map	m(1)(912)	m(1)(913)
Bashicu matrix system	(0)(1)[3]	(0)(1)[4]
Fast-growing hierarchy	\(f_2(8956)\)	\(f_2(8957)\)
Hardy hierarchy	\(H_{\omega^2}(8956)\)	\(H_{\omega^2}(8957)\)
Slow-growing hierarchy	\(g_{\omega^{\omega^3 2+\omega^2 7}}(10)\) (exact)

For the long scale:

Notation	Lower bound	Upper bound
Scientific notation	\(1\times10^{5394}\) (exact)
Arrow notation	\(10\uparrow 5394\) (exact)
Steinhaus-Moser Notation	1673[3]	1674[3]
Chained arrow notation	\(10\rightarrow 5394\) (exact)
Taro's multivariable Ackermann function	A(3,17915)	A(3,17916)
BEAF & Bird's array notation	{10,5394} (exact)
Hyper-E notation	E5394 (exact)
s(n) map	\(s(1)^3(\lambda x.x+1)(10)\)	\(s(1)^3(\lambda x.x+1)(11)\)
m(n) map	m(1)(1673)	m(1)(1674)
Bashicu matrix system	(0)(1)[3]	(0)(1)[4]
Fast-growing hierarchy	\(f_2(17904)\)	\(f_2(17905)\)
Hardy hierarchy	\(H_{\omega^2}(17904)\)	\(H_{\omega^2}(17905)\)
Slow-growing hierarchy	\(g_{\omega^{\omega^3 5+\omega^2 3+\omega 9+4}}(10)\) (exact)

Sources[]

↑ Conway and Guy. (1995) "The book of Numbers" Copernicus
↑ Munafo, Robert. The Conway-Wechsler System. Retrieved 2023-06-22.
↑ Olsen, Steve. Big-Ass Numbers. Retrieved 2023-06-22.
↑ Fish. Conway's zillion numbers. Retrieved 2023-06-22.
↑ Fish. Conway's illion converter - 10^2700. Retrieved 2023-06-22.
↑ Fish. Conway's illion converter - 10^2700 (long scale). Retrieved 2023-06-22.
↑ NumLynx's Large Numbers
↑ RedBandServerYT. n-ary numbers. Retrieved 26 November 2021.
↑ BlankEntity. BlankEntity's Googology - Class 1 and 2. Retrieved 2022-06-10.

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

Standard -octingentillion numbers 10²⁴⁰³ (10⁴⁸⁰⁰)

Main article: -illion

[1] Conway and Guy. (1995) "The book of Numbers" Copernicus

[2] Munafo, Robert. The Conway-Wechsler System. Retrieved 2023-06-22.

[3] Olsen, Steve. Big-Ass Numbers. Retrieved 2023-06-22.

[fish-4] Fish. Conway's zillion numbers. Retrieved 2023-06-22.

[5] Fish. Conway's illion converter - 10^2700. Retrieved 2023-06-22.

[6] Fish. Conway's illion converter - 10^2700 (long scale). Retrieved 2023-06-22.

[7] NumLynx's Large Numbers

[8] RedBandServerYT. n-ary numbers. Retrieved 26 November 2021.

[9] BlankEntity. BlankEntity's Googology - Class 1 and 2. Retrieved 2022-06-10.

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