Untrigintaoctingentillion

An untrigintaoctingentillion is equal to \(10^{2496}\) in the short scale and \(10^{4986}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 831st -illion number.
In the long scale, \(10^{2496}\) is called sedeciquadringentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2496}\) (exact) 	\(1\times10^{2496}\) (exact)
Arrow notation 	\(10\uparrow 2496\) (exact) 	\(10\uparrow 2496\) (exact)
Steinhaus-Moser Notation 	851[3] 	852[3]
Chained arrow notation 	\(10\rightarrow 2496\) (exact) 	\(10\rightarrow 2496\) (exact)
Taro's multivariable Ackermann function	A(3,8288) 	A(3,8289)
BEAF & Bird's array notation 	{10,2496} (exact) 	{10,2496} (exact)
Hyper-E notation 	E2496 (exact) 	E2496 (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)(851) 	m(1)(852)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(8278)\) 	\(f_2(8279)\)
Hardy hierarchy 	\(H_{\omega^2}(8278)\) 	\(H_{\omega^2}(8279)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 4+\omega 9+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 4+\omega 9+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4986}\) (exact) 	\(1\times10^{4986}\) (exact)
Arrow notation 	\(10\uparrow 4986\) (exact) 	\(10\uparrow 4986\) (exact)
Steinhaus-Moser Notation 	1561[3] 	1562[3]
Chained arrow notation 	\(10\rightarrow 4986\) (exact) 	\(10\rightarrow 4986\) (exact)
Taro's multivariable Ackermann function	A(3,16560) 	A(3,16561)
BEAF & Bird's array notation 	{10,4986} (exact) 	{10,4986} (exact)
Hyper-E notation 	E4986 (exact) 	E4986 (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)(1561) 	m(1)(1562)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(16549)\) 	\(f_2(16550)\)
Hardy hierarchy 	\(H_{\omega^2}(16549)\) 	\(H_{\omega^2}(16550)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2 9+\omega 8+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2 9+\omega 8+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers