Quintillion

A quintillion is equal to 1018 in the short scale, or 1030 in the long scale.Cambridge Dictionary QuintillionLarousse (French dictionary) Quintillion (source for long scale in French)Conway and Guy. The Book of Numbers. Copernicus. 1995. ISBN 978-0387979939 p.14Quintillion at Wolfram MathWorld
Written out in decimal form quintillion (in the short scale) is:
In long scale:
This number is also called hexillion in Russ Rowlett's Greek-based naming system.Russ Rowlett　Names for Large Numbers　Archived 2006-01-10.
Aarex Tiaokhiao calls this number hetillion.Aarex Tiaokhiao's illion numbers He also gave name ocdoocol and 18-noogol, referring to the short scale value of this number.Part 1 (LAN) - Aarex Googology
Wikia user NumLynx gave the name sexasand for this number's short scale value.NumLynx's Large Numbers
Nicolas Chuquet coined tryllion for 1018 (not to be confused with 1032), according to the Triparty en la science des nombres, which was previously lost and not rediscovered until 1880. Olivier Miakinen, Grands nombres : 1270-1961, sept siècles d'histoire in Écriture des nombres en français. 1 May 2004Robert Munafo, Origins of the Chuquet Number Names Later it became trillion in long scale.
== Examples ==
*Niagara Falls takes up 210,000 years (about 30 times all recorded history) to use up a quintillion gallons of water.
*A single drop of water contains 1.7 quintillion water molecules.
*The distance from the Milky way to Andromeda is 2 million light years, which is about 11.73 quintillion miles or 18.877 quintillion kilometers.
*The entire Earth contains about 326 quintillion gallons of water.
*There are about 43.3 quintillion ways to arrange a 3×3×3 .Notable Properties of Specific Numbers (page 18)
* The SI prefix exa- multiplies by one quintillion.
* The Earth's cross section has an area of about 1.275 quintillion square centimeters. Almost Infinite
* By one estimate, there are 20 quintillion living animals on Earth.How Many Wild Animals Are There?
* a tower of a quintillion one dollar bills would aproximately measure 1.099*10^20m in height.
* The half-life of Bismuth-209 is approximately 20 quintillion years.
* There are about 6.2 quintillion electrons carried by a charge of 1 coulomb (e-1).Lopac, Vjera, and Dario Hrupec. "What exactly are the new definitions of kilogram and other SI units?." The Physics Teacher 58.1 (2020): 58-60.https://metricsystem.net/derived-units/special-names/coulomb/
== As a banknote denomination ==
The highest denomination banknote ever issued in the world, recorded in the Guiness World Record onlineGuiness World Record. https://www.guinnessworldrecords.com/world-records/highest-denomination-banknote Retrieved 2024-09-18., was the 100 million billion pengő (100 quintillion = 1020 because billion is long scale) from Hungary, printed in 1946 during one of the worst hyperinflations ever recorded. See also Currency-related numbers.
==Approximations==
For short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{18}\) 	\(1\times10^{18}\)
Arrow notation 	\(10\uparrow18\) 	\(10\uparrow18\)
Steinhaus-Moser Notation 	15[3] 	16[3]
Copy notation 	9[18] 	1[19]
Taro's multivariable Ackermann function	A(3,56) 	A(3,57)
Pound-Star Notation 	#*(4,1,3)*6 	#*(3,1)*13
BEAF 	{10,18} 	{10,18}
Hyper-E notation 	E18 	E18
Bashicu matrix system 	(0)(0)[31622] 	(0)(0)[31623]
Hyperfactorial array notation 	19! 	20!
Fast-growing hierarchy 	\(f_2(54)\) 	\(f_2(55)\)
Hardy hierarchy 	\(H_{\omega^2}(54)\) 	\(H_{\omega^2}(55)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega+8}}(10)\)	\(g_{\omega^{\omega+8}}(10)\)
For long 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}
Hyper-E notation 	E30 	E30
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 	\(g_{\omega^{\omega3}}(10)\)	\(g_{\omega^{\omega3}}(10)\)
== Gallery ==
1 Quintillion Dollars.jpg|A quintillion dollars in 100 piles of 100 dollar bills in comparison to the Empire State Building
Quintillion2.jpg|A quintillion square centimeters in comparison to the earth.
== Sources ==
== See also ==
*quintyllion
Category:Numbers
Category:Banknote denominations
Category:Base Illion
Category:Class 2
Category:Illion
Category:Numbers with 7 to 29 digits
Category:Numbers with 30 to 100 digits
Category:Tier 1 -illion numbers
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