Quinsexagintacentillion

A quinsexagintacentillion is equal to \(10^{498}\) in the short scale and \(10^{990}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 165th -illion number.
In the long scale, \(10^{498}\) is called tresoctogintillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{498}\) (exact) 	\(1\times10^{498}\) (exact)
Arrow notation 	\(10\uparrow 498\) (exact) 	\(10\uparrow 498\) (exact)
Steinhaus-Moser Notation 	213[3] 	214[3]
Chained arrow notation 	\(10\rightarrow 498\) (exact) 	\(10\rightarrow 498\) (exact)
Taro's multivariable Ackermann function	A(3,1651) 	A(3,1652)
BEAF & Bird's array notation 	{10,498} (exact) 	{10,498} (exact)
Hyper-E notation 	E498 (exact) 	E498 (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)(213) 	m(1)(214)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)[88] 	(0)(0)(0)(0)(0)(0)(0)(0)[89]
Fast-growing hierarchy 	\(f_2(1643)\) 	\(f_2(1644)\)
Hardy hierarchy 	\(H_{\omega^2}(1643)\) 	\(H_{\omega^2}(1644)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 4+\omega 9+8}}(10)\) (exact)	\(g_{\omega^{\omega^2 4+\omega 9+8}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{990}\) (exact) 	\(1\times10^{990}\) (exact)
Arrow notation 	\(10\uparrow 990\) (exact) 	\(10\uparrow 990\) (exact)
Steinhaus-Moser Notation 	383[3] 	384[3]
Chained arrow notation 	\(10\rightarrow 990\) (exact) 	\(10\rightarrow 990\) (exact)
Taro's multivariable Ackermann function	A(3,3285) 	A(3,3286)
BEAF & Bird's array notation 	{10,990} (exact) 	{10,990} (exact)
Hyper-E notation 	E990 (exact) 	E990 (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)(383) 	m(1)(384)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(3277)\) 	\(f_2(3278)\)
Hardy hierarchy 	\(H_{\omega^2}(3277)\) 	\(H_{\omega^2}(3278)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 9+\omega 9}}(10)\) (exact)	\(g_{\omega^{\omega^2 9+\omega 9}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 101 to 999 digits
Category:Powers of 10 with squarefree exponent
Category:Tier 1 -illion numbers