Unvigintioctingentillion

An unvigintioctingentillion is equal to \(10^{2466}\) in the short scale and \(10^{4926}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 821st -illion number.
In the long scale, \(10^{2466}\) is called undeciquadringentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2466}\) (exact) 	\(1\times10^{2466}\) (exact)
Arrow notation 	\(10\uparrow 2466\) (exact) 	\(10\uparrow 2466\) (exact)
Steinhaus-Moser Notation 	842[3] 	843[3]
Chained arrow notation 	\(10\rightarrow 2466\) (exact) 	\(10\rightarrow 2466\) (exact)
Taro's multivariable Ackermann function	A(3,8188) 	A(3,8189)
BEAF & Bird's array notation 	{10,2466} (exact) 	{10,2466} (exact)
Hyper-E notation 	E2466 (exact) 	E2466 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(9)\) 	\(s(1)^3(\lambda x.x+1)(10)\)
m(n) map 	m(1)(842) 	m(1)(843)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(8178)\) 	\(f_2(8179)\)
Hardy hierarchy 	\(H_{\omega^2}(8178)\) 	\(H_{\omega^2}(8179)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 4+\omega 6+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 4+\omega 6+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4926}\) (exact) 	\(1\times10^{4926}\) (exact)
Arrow notation 	\(10\uparrow 4926\) (exact) 	\(10\uparrow 4926\) (exact)
Steinhaus-Moser Notation 	1544[3] 	1545[3]
Chained arrow notation 	\(10\rightarrow 4926\) (exact) 	\(10\rightarrow 4926\) (exact)
Taro's multivariable Ackermann function	A(3,16360) 	A(3,16361)
BEAF & Bird's array notation 	{10,4926} (exact) 	{10,4926} (exact)
Hyper-E notation 	E4926 (exact) 	E4926 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(10)\) 	\(s(1)^3(\lambda x.x+1)(11)\)
m(n) map 	m(1)(1544) 	m(1)(1545)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(16349)\) 	\(f_2(16350)\)
Hardy hierarchy 	\(H_{\omega^2}(16349)\) 	\(H_{\omega^2}(16350)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2 9+\omega 2+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2 9+\omega 2+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers