Unquinquagintaseptingentillion

An unquinquagintaseptingentillion is equal to \(10^{2256}\) in the short scale and \(10^{4506}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 751st -illion number.
In the long scale, \(10^{2256}\) is called seseptuagintatrecentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2256}\) (exact) 	\(1\times10^{2256}\) (exact)
Arrow notation 	\(10\uparrow 2256\) (exact) 	\(10\uparrow 2256\) (exact)
Steinhaus-Moser Notation 	780[3] 	781[3]
Chained arrow notation 	\(10\rightarrow 2256\) (exact) 	\(10\rightarrow 2256\) (exact)
Taro's multivariable Ackermann function	A(3,7491) 	A(3,7492)
BEAF & Bird's array notation 	{10,2256} (exact) 	{10,2256} (exact)
Hyper-E notation 	E2256 (exact) 	E2256 (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)(780) 	m(1)(781)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(7481)\) 	\(f_2(7482)\)
Hardy hierarchy 	\(H_{\omega^2}(7481)\) 	\(H_{\omega^2}(7482)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 2+\omega 5+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 2+\omega 5+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4506}\) (exact) 	\(1\times10^{4506}\) (exact)
Arrow notation 	\(10\uparrow 4506\) (exact) 	\(10\uparrow 4506\) (exact)
Steinhaus-Moser Notation 	1428[3] 	1429[3]
Chained arrow notation 	\(10\rightarrow 4506\) (exact) 	\(10\rightarrow 4506\) (exact)
Taro's multivariable Ackermann function	A(3,14965) 	A(3,14966)
BEAF & Bird's array notation 	{10,4506} (exact) 	{10,4506} (exact)
Hyper-E notation 	E4506 (exact) 	E4506 (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)(1428) 	m(1)(1429)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(14954)\) 	\(f_2(14955)\)
Hardy hierarchy 	\(H_{\omega^2}(14954)\) 	\(H_{\omega^2}(14955)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2 5+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2 5+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers