Unsescentillion

An unsescentillion is equal to \(10^{1806}\) in the short scale and \(10^{3606}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 601st -illion number.
In the long scale, \(10^{1806}\) is called untrecentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1806}\) (exact) 	\(1\times10^{1806}\) (exact)
Arrow notation 	\(10\uparrow 1806\) (exact) 	\(10\uparrow 1806\) (exact)
Steinhaus-Moser Notation 	643[3] 	644[3]
Chained arrow notation 	\(10\rightarrow 1806\) (exact) 	\(10\rightarrow 1806\) (exact)
Taro's multivariable Ackermann function	A(3,5996) 	A(3,5997)
BEAF & Bird's array notation 	{10,1806} (exact) 	{10,1806} (exact)
Hyper-E notation 	E1806 (exact) 	E1806 (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)(643) 	m(1)(644)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(5986)\) 	\(f_2(5987)\)
Hardy hierarchy 	\(H_{\omega^2}(5986)\) 	\(H_{\omega^2}(5987)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 8+6}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 8+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{3606}\) (exact) 	\(1\times10^{3606}\) (exact)
Arrow notation 	\(10\uparrow 3606\) (exact) 	\(10\uparrow 3606\) (exact)
Steinhaus-Moser Notation 	1174[3] 	1175[3]
Chained arrow notation 	\(10\rightarrow 3606\) (exact) 	\(10\rightarrow 3606\) (exact)
Taro's multivariable Ackermann function	A(3,11975) 	A(3,11976)
BEAF & Bird's array notation 	{10,3606} (exact) 	{10,3606} (exact)
Hyper-E notation 	E3606 (exact) 	E3606 (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)(1174) 	m(1)(1175)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(11965)\) 	\(f_2(11966)\)
Hardy hierarchy 	\(H_{\omega^2}(11965)\) 	\(H_{\omega^2}(11966)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 3+\omega^2 6+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 3+\omega^2 6+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Powers of 10 with squarefree exponent
Category:Tier 1 -illion numbers