Nonillion

A nonillion is equal to 1030 in the short scale, or 1054 in the long scale.Merriam-Webster Dictionary NonillionConway and Guy. The Book of Numbers. Copernicus. 1995. ISBN 978-0387979939 p.14Nonillion at Wolfram MathWorld It is sometimes erroneously referred to as nontillion.Nontillion at Word Spy
In the long scale, 1030 is called a quintillion.
This number is also called dekillion (not to be confused with decillion) in Russ Rowlett's Greek-based naming system of -illions.Russ Rowlett　Names for Large Numbers　Archived 2006-01-10. 
Aarex Tiaokhiao calls this number decillion (not to be confused with the standard system decillion).Aarex Tiaokhiao's illion numbers - Aarex Tiaokhiao's large numbers site He also gave name thootol and 30-noogol, referring to the short scale value of this number.Part 1 (LAN) - Aarex Googology (archived 25 February 2017)
Wikia user NumLynx gave the name decisand for this number's short scale value.
Sbiis Saibian gave the name gobycrumb, referring to the short scale value of this number.Hyper-E Notation, Large Numbers
Username5243 calls this number (in short scale) gootirol, and it's equal to 10[1]30 in Username5243's Array Notation.Part 1 - My Large Numbers 
BlankEntity coined phosphillion for this number's short scale value.
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== Decimal ==
*1,000,000,000,000,000,000,000,000,000,000 - short scale
*1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 - long scale
== Examples ==
*The mass of the sun is about 1.989 nonillion kg.Saibian, Sbiis. Larger numbers in science
*The recent SI prefix quetta- multiplies by one nonillion.
*A nonillion dollars would cover the world with a layer of 15,000km thick.
*The volume of the Observable Universe is about 830 nonillion cubic light years.
*The Planck Temperature is about 1.4 nonillion Kelvins
*It is estimated that there are about 5 nonillion bacteria on earth.Science Learning Hub Bacteria Retrieved 2024-09-14.
== Approximations ==
For short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{30}\) 	\(1\times10^{30}\)
Arrow notation 	\(10\uparrow30\) 	\(10\uparrow30\)
Steinhaus-Moser Notation 	22[3] 	23[3]
Copy notation 	9[30] 	1[31]
Taro's multivariable Ackermann function	A(3,96) 	A(3,97)
Pound-Star Notation 	#*(9,6,4)*9 	#*(0,1,0,0,1)*5
BEAF 	{10,30} 	{10,30}
Bashicu matrix system 	(0)(0)(0)[5623] 	(0)(0)(0)[5624]
Hyperfactorial array notation 	28! 	29!
Fast-growing hierarchy 	\(f_2(93)\) 	\(f_2(94)\)
Hardy hierarchy 	\(H_{\omega^2}(93)\) 	\(H_{\omega^2}(94)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega3}}(10)\)	\(g_{\omega^{\omega3}}(10)\)
For long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{54}\) 	\(1\times10^{54}\)
Arrow notation 	\(10\uparrow54\) 	\(10\uparrow54\)
Steinhaus-Moser Notation 	34[3] 	35[3]
Copy notation 	9[54] 	1[55]
Taro's multivariable Ackermann function	A(3,176) 	A(3,177)
Pound-Star Notation 	#*(5,6,4,6,0,2)*6 	#*(1,7,8,1,3)*8
BEAF 	{10,54} 	{10,54}
Bashicu matrix system 	(0)(0)(0)(0)[2371] 	(0)(0)(0)(0)[2372]
Hyperfactorial array notation 	43! 	44!
Fast-growing hierarchy 	\(f_2(171)\) 	\(f_2(172)\)
Hardy hierarchy 	\(H_{\omega^2}(171)\) 	\(H_{\omega^2}(172)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega5+4}}(10)\)	\(g_{\omega^{\omega5+4}}(10)\)
== Sources ==
fr:Nonillion
Category:Numbers
Category:Illion
Category:Class 2
Category:Base Illion
Category:Numbers with 30 to 100 digits
Category:Powers of 10 with squarefree exponent
Category:Tier 1 -illion numbers
Category:Googol Regiment
Category:Numbers with peer-reviewed source