Unseptuagintacentillion

An unseptuagintacentillion is equal to \(10^{516}\) in the short scale and \(10^{1026}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 171st -illion number.
In the long scale, \(10^{516}\) is called sexoctogintillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{516}\) (exact) 	\(1\times10^{516}\) (exact)
Arrow notation 	\(10\uparrow 516\) (exact) 	\(10\uparrow 516\) (exact)
Steinhaus-Moser Notation 	220[3] 	221[3]
Chained arrow notation 	\(10\rightarrow 516\) (exact) 	\(10\rightarrow 516\) (exact)
Taro's multivariable Ackermann function	A(3,1711) 	A(3,1712)
BEAF & Bird's array notation 	{10,516} (exact) 	{10,516} (exact)
Hyper-E notation 	E516 (exact) 	E516 (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)(220) 	m(1)(221)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[10] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[11]
Fast-growing hierarchy 	\(f_2(1703)\) 	\(f_2(1704)\)
Hardy hierarchy 	\(H_{\omega^2}(1703)\) 	\(H_{\omega^2}(1704)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 5+\omega+6}}(10)\) (exact)	\(g_{\omega^{\omega^2 5+\omega+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1026}\) (exact) 	\(1\times10^{1026}\) (exact)
Arrow notation 	\(10\uparrow 1026\) (exact) 	\(10\uparrow 1026\) (exact)
Steinhaus-Moser Notation 	395[3] 	396[3]
Chained arrow notation 	\(10\rightarrow 1026\) (exact) 	\(10\rightarrow 1026\) (exact)
Taro's multivariable Ackermann function	A(3,3405) 	A(3,3406)
BEAF & Bird's array notation 	{10,1026} (exact) 	{10,1026} (exact)
Hyper-E notation 	E1026 (exact) 	E1026 (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)(395) 	m(1)(396)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(3396)\) 	\(f_2(3397)\)
Hardy hierarchy 	\(H_{\omega^2}(3396)\) 	\(H_{\omega^2}(3397)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega 2+6}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega 2+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 101 to 999 digits
Category:Tier 1 -illion numbers