Unnonagintasescentillion

An unnonagintasescentillion is equal to \(10^{2076}\) in the short scale and \(10^{4146}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 691st -illion number.
In the long scale, \(10^{2076}\) is called sesquadragintatrecentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2076}\) (exact) 	\(1\times10^{2076}\) (exact)
Arrow notation 	\(10\uparrow 2076\) (exact) 	\(10\uparrow 2076\) (exact)
Steinhaus-Moser Notation 	725[3] 	726[3]
Chained arrow notation 	\(10\rightarrow 2076\) (exact) 	\(10\rightarrow 2076\) (exact)
Taro's multivariable Ackermann function	A(3,6893) 	A(3,6894)
BEAF & Bird's array notation 	{10,2076} (exact) 	{10,2076} (exact)
Hyper-E notation 	E2076 (exact) 	E2076 (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)(725) 	m(1)(726)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(6883)\) 	\(f_2(6884)\)
Hardy hierarchy 	\(H_{\omega^2}(6883)\) 	\(H_{\omega^2}(6884)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega 7+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega 7+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4146}\) (exact) 	\(1\times10^{4146}\) (exact)
Arrow notation 	\(10\uparrow 4146\) (exact) 	\(10\uparrow 4146\) (exact)
Steinhaus-Moser Notation 	1327[3] 	1328[3]
Chained arrow notation 	\(10\rightarrow 4146\) (exact) 	\(10\rightarrow 4146\) (exact)
Taro's multivariable Ackermann function	A(3,13769) 	A(3,13770)
BEAF & Bird's array notation 	{10,4146} (exact) 	{10,4146} (exact)
Hyper-E notation 	E4146 (exact) 	E4146 (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)(1327) 	m(1)(1328)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(13758)\) 	\(f_2(13759)\)
Hardy hierarchy 	\(H_{\omega^2}(13758)\) 	\(H_{\omega^2}(13759)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2+\omega 4+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2+\omega 4+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers