Unseptuagintaducentillion

An unseptuagintaducentillion is equal to \(10^{816}\) in the short scale and \(10^{1626}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 271st -illion number.
In the long scale, \(10^{816}\) is called sestrigintacentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{816}\) (exact) 	\(1\times10^{816}\) (exact)
Arrow notation 	\(10\uparrow 816\) (exact) 	\(10\uparrow 816\) (exact)
Steinhaus-Moser Notation 	324[3] 	325[3]
Chained arrow notation 	\(10\rightarrow 816\) (exact) 	\(10\rightarrow 816\) (exact)
Taro's multivariable Ackermann function	A(3,2707) 	A(3,2708)
BEAF & Bird's array notation 	{10,816} (exact) 	{10,816} (exact)
Hyper-E notation 	E816 (exact) 	E816 (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)(324) 	m(1)(325)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[39] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[40]
Fast-growing hierarchy 	\(f_2(2699)\) 	\(f_2(2700)\)
Hardy hierarchy 	\(H_{\omega^2}(2699)\) 	\(H_{\omega^2}(2700)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 8+\omega+6}}(10)\) (exact)	\(g_{\omega^{\omega^2 8+\omega+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1626}\) (exact) 	\(1\times10^{1626}\) (exact)
Arrow notation 	\(10\uparrow 1626\) (exact) 	\(10\uparrow 1626\) (exact)
Steinhaus-Moser Notation 	587[3] 	588[3]
Chained arrow notation 	\(10\rightarrow 1626\) (exact) 	\(10\rightarrow 1626\) (exact)
Taro's multivariable Ackermann function	A(3,5398) 	A(3,5399)
BEAF & Bird's array notation 	{10,1626} (exact) 	{10,1626} (exact)
Hyper-E notation 	E1626 (exact) 	E1626 (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)(587) 	m(1)(588)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(5389)\) 	\(f_2(5390)\)
Hardy hierarchy 	\(H_{\omega^2}(5389)\) 	\(H_{\omega^2}(5390)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 6+\omega 2+6}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 6+\omega 2+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 101 to 999 digits
Category:Tier 1 -illion numbers