Quattuorsexagintacentillion

A quattuorsexagintacentillion is equal to \(10^{495}\) in the short scale and \(10^{984}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 164th -illion number.
In the long scale, \(10^{495}\) is called duooctogintilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{495}\) (exact) 	\(1\times10^{495}\) (exact)
Arrow notation 	\(10\uparrow 495\) (exact) 	\(10\uparrow 495\) (exact)
Steinhaus-Moser Notation 	212[3] 	213[3]
Chained arrow notation 	\(10\rightarrow 495\) (exact) 	\(10\rightarrow 495\) (exact)
Taro's multivariable Ackermann function	A(3,1641) 	A(3,1642)
BEAF & Bird's array notation 	{10,495} (exact) 	{10,495} (exact)
Hyper-E notation 	E495 (exact) 	E495 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(7)\) 	\(s(1)^3(\lambda x.x+1)(8)\)
m(n) map 	m(1)(212) 	m(1)(213)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)[85] 	(0)(0)(0)(0)(0)(0)(0)(0)[86]
Fast-growing hierarchy 	\(f_2(1633)\) 	\(f_2(1634)\)
Hardy hierarchy 	\(H_{\omega^2}(1633)\) 	\(H_{\omega^2}(1634)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 4+\omega 9+5}}(10)\) (exact)	\(g_{\omega^{\omega^2 4+\omega 9+5}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{984}\) (exact) 	\(1\times10^{984}\) (exact)
Arrow notation 	\(10\uparrow 984\) (exact) 	\(10\uparrow 984\) (exact)
Steinhaus-Moser Notation 	381[3] 	382[3]
Chained arrow notation 	\(10\rightarrow 984\) (exact) 	\(10\rightarrow 984\) (exact)
Taro's multivariable Ackermann function	A(3,3265) 	A(3,3266)
BEAF & Bird's array notation 	{10,984} (exact) 	{10,984} (exact)
Hyper-E notation 	E984 (exact) 	E984 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(8)\) 	\(s(1)^3(\lambda x.x+1)(9)\)
m(n) map 	m(1)(381) 	m(1)(382)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(3257)\) 	\(f_2(3258)\)
Hardy hierarchy 	\(H_{\omega^2}(3257)\) 	\(H_{\omega^2}(3258)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 9+\omega 8+4}}(10)\) (exact)	\(g_{\omega^{\omega^2 9+\omega 8+4}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 101 to 999 digits
Category:Tier 1 -illion numbers