Muryoutaisuu

Muryoutaisuu (無量大数 written in Japanese,无量大数 in Chinese, means "immeasurable large number") is \(10^{68}\) in Japanese counting systemConway and Guy. The Book of Numbers. Copernicus. 1995. ISBN 978-0387979939 p.16
大数の名前. It was derived from Chinese counting system, which was derived from Buddism's sutra in India. There are several different versions of counting systems in Chinese, meaning different numbers for the same Chinese character but different pronunciation高杉親知. (Oct 2, 2002) "無量大数の彼方へ". 思索の遊び場. (archive.org, 2006-07-19).
It first appeared in Jinkouki (Japanese: 塵劫記) by Mitsuyoshi Yoshida in 1631. In the first edition of Jinkouki published in 1627, numbers up to Fukashigi was defined, and muryoutaisuu did not appear. In the 1631 edition of Jinkouki, definition of Muryoutaisuu was \(10^{88}\), and later in the 1634 edition of Jinkouki, definition changed to \(10^{68}\). Therefore, the definition of Muryoutaisuu is now \(10^{68}\).
In English, it is one hundred unvigintillion in short scale and one hundred undecillion in long scale.
The total mass-energy of the is estimated to be about 130 muryoutaisuu joules.
=== Approximations ===
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{68}\) 	\(1\times10^{68}\)
Arrow notation 	\(10\uparrow68\) 	\(10\uparrow68\)
Steinhaus-Moser Notation 	41[3] 	42[3]
Copy notation 	9[68] 	1[69]
Taro's multivariable Ackermann function	A(3,222) 	A(3,223)
Pound-Star Notation 	#*(12,0,8,4,3)*10 	#*(7,0,8,6,3,1)*8
BEAF & Bird's array notation 	{10,68} 	{10,68}
Hyper-E notation 	E68 	E68
Bashicu matrix system 	(0)(0)(0)(0)[17782] 	(0)(0)(0)(0)[17783]
Strong array notation 	s(10,68) 	s(10,68)
Hyperfactorial array notation 	52! 	53!
Fast-growing hierarchy 	\(f_2(218)\) 	\(f_2(219)\)
Hardy hierarchy 	\(H_{\omega^2}(218)\) 	\(H_{\omega^2}(219)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega6+8}}(10)\)	\(g_{\omega^{\omega6+8}}(10)\)
=== Sources ===
===See also===
ja:無量大数
zh:無量大數
Category:Numbers
Category:Class 2
Category:Googology in Asia
Category:Numbers with 30 to 100 digits
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