Untrigintasescentillion

An untrigintasescentillion is equal to \(10^{1896}\) in the short scale and \(10^{3786}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 631st -illion number.
In the long scale, \(10^{1896}\) is called sedecitrecentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1896}\) (exact) 	\(1\times10^{1896}\) (exact)
Arrow notation 	\(10\uparrow 1896\) (exact) 	\(10\uparrow 1896\) (exact)
Steinhaus-Moser Notation 	670[3] 	671[3]
Chained arrow notation 	\(10\rightarrow 1896\) (exact) 	\(10\rightarrow 1896\) (exact)
Taro's multivariable Ackermann function	A(3,6295) 	A(3,6296)
BEAF & Bird's array notation 	{10,1896} (exact) 	{10,1896} (exact)
Hyper-E notation 	E1896 (exact) 	E1896 (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)(670) 	m(1)(671)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(6285)\) 	\(f_2(6286)\)
Hardy hierarchy 	\(H_{\omega^2}(6285)\) 	\(H_{\omega^2}(6286)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 8+\omega 9+6}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 8+\omega 9+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{3786}\) (exact) 	\(1\times10^{3786}\) (exact)
Arrow notation 	\(10\uparrow 3786\) (exact) 	\(10\uparrow 3786\) (exact)
Steinhaus-Moser Notation 	1225[3] 	1226[3]
Chained arrow notation 	\(10\rightarrow 3786\) (exact) 	\(10\rightarrow 3786\) (exact)
Taro's multivariable Ackermann function	A(3,12573) 	A(3,12574)
BEAF & Bird's array notation 	{10,3786} (exact) 	{10,3786} (exact)
Hyper-E notation 	E3786 (exact) 	E3786 (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)(1225) 	m(1)(1226)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(12563)\) 	\(f_2(12564)\)
Hardy hierarchy 	\(H_{\omega^2}(12563)\) 	\(H_{\omega^2}(12564)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 3+\omega^2 7+\omega 8+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 3+\omega^2 7+\omega 8+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers