Lakh

A lakh is equal to 100,000, one tenth of one million, or 105.Conway and Guy. The Book of Numbers. Copernicus. 1995. ISBN 978-0387979939 p.16 It is used in the Indian naming system. 100 lakh is one crore. Larger numbers are sometimes combinations of both, a lakh crore for example equal to one trillion. 1000 lakh is one myllion in the myriad system.
Nirvana Supermind calls this number Two-ex-grand zeroogol or quinol , and it's equal to Q<10,grand zeroogol> = Q<10,5,1> in Quick array notationNumbers from quick array notation.
Aarex Tiaokhiao calls this number qoonol, 5-noogolPart 1 (LAN) - Aarex Googology, or goonaoltrult, and it's equal to a(10,100,0)x[3] in Aarex's Array Notation.AAN Numbers - P1 - Aarex Googology
Username5243 calls this number niloogolduplex or gooqnol, and it's equal to 10[1]5 in Username5243's Array Notation.Part 1 - My Large Numbers
Wikia user NumLynx gave the name pentaplex for this number, coined in analogy to pentalogue. 
DeepLineMadom calls the number boogolduplex, and is equal to 10[2]10[2]10[2]100 in DeepLineMadom's Array NotationDeepLineMadom's googology - Numbers I've coined (Retrieved 4 May 2022). It is not to be confused with the much larger Bowers' boogolduplex, which is {10,10,{10,10,{10,10,100}}} in BEAF.
In the , 100,000 is sometimes called "Zehntelmillion".
== Currency-related use ==
Some currencies, such as the and the , have banknotes with this number in the denomination.
It was also the prize for correctly answering the first question in the Italian game show in .
Furthermore, it was also the prize for correctly answering the first five questions in the Japanese game show in .
== In politics ==
In Germany, municipalities with at least 100,000 inhabitants are called Großstadt.
== Approximations ==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^5\) 	\(1\times10^5\)
Arrow notation 	\(10\uparrow5\) 	\(10\uparrow5\)
Steinhaus-Moser Notation 	6[3] 	7[3]
Copy notation 	9[5] 	1[6]
Taro's multivariable Ackermann function	A(3,13) 	A(3,14)
Pound-Star Notation 	#*(32)*3 	#*(2)*13
BEAF 	{10,5} 	{10,5}
Hyper-E notation 	E5 	E5
Bashicu matrix system 	(0)[316] 	(0)[317]
Hyperfactorial array notation 	8! 	4!1
Fast-growing hierarchy 	\(f_2(12)\) 	\(f_2(13)\)
Hardy hierarchy 	\(H_{\omega^2}(12)\)	\(H_{\omega^2}(13)\)
Slow-growing hierarchy 	\(g_{\omega^5}(10)\)	\(g_{\omega^5}(10)\)
== Sources ==
== See also ==
zh:拉克
Category:Numbers
Category:Banknote denominations
Category:Class 1
Category:Game show prizes
Category:Googology in Asia
Category:Numbers in politics
Category:Numbers with 4 to 6 digits
Category:Powers of 10
Category:Googol Regiment
Category:Numbers with peer-reviewed source