Vigintiducentillion

A vigintiducentillion is equal to \(10^{663}\) in the short scale and \(10^{1320}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 220th -illion number.
In the long scale, \(10^{663}\) is called decicentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{663}\) (exact) 	\(1\times10^{663}\) (exact)
Arrow notation 	\(10\uparrow 663\) (exact) 	\(10\uparrow 663\) (exact)
Steinhaus-Moser Notation 	272[3] 	273[3]
Chained arrow notation 	\(10\rightarrow 663\) (exact) 	\(10\rightarrow 663\) (exact)
Taro's multivariable Ackermann function	A(3,2199) 	A(3,2200)
BEAF & Bird's array notation 	{10,663} (exact) 	{10,663} (exact)
Hyper-E notation 	E663 (exact) 	E663 (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)(272) 	m(1)(273)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[19] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[20]
Fast-growing hierarchy 	\(f_2(2191)\) 	\(f_2(2192)\)
Hardy hierarchy 	\(H_{\omega^2}(2191)\) 	\(H_{\omega^2}(2192)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 6+\omega 6+3}}(10)\) (exact)	\(g_{\omega^{\omega^2 6+\omega 6+3}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1320}\) (exact) 	\(1\times10^{1320}\) (exact)
Arrow notation 	\(10\uparrow 1320\) (exact) 	\(10\uparrow 1320\) (exact)
Steinhaus-Moser Notation 	490[3] 	491[3]
Chained arrow notation 	\(10\rightarrow 1320\) (exact) 	\(10\rightarrow 1320\) (exact)
Taro's multivariable Ackermann function	A(3,4381) 	A(3,4382)
BEAF & Bird's array notation 	{10,1320} (exact) 	{10,1320} (exact)
Hyper-E notation 	E1320 (exact) 	E1320 (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)(490) 	m(1)(491)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(4372)\) 	\(f_2(4373)\)
Hardy hierarchy 	\(H_{\omega^2}(4372)\) 	\(H_{\omega^2}(4373)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 3+\omega 2}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 3+\omega 2}}(10)\) (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