Octodecisescentillion

An octodecisescentillion is equal to \(10^{1857}\) in the short scale and \(10^{3708}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 618th -illion number.
In the long scale, \(10^{1857}\) is called noventrecentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1857}\) (exact) 	\(1\times10^{1857}\) (exact)
Arrow notation 	\(10\uparrow 1857\) (exact) 	\(10\uparrow 1857\) (exact)
Steinhaus-Moser Notation 	658[3] 	659[3]
Chained arrow notation 	\(10\rightarrow 1857\) (exact) 	\(10\rightarrow 1857\) (exact)
Taro's multivariable Ackermann function	A(3,6165) 	A(3,6166)
BEAF & Bird's array notation 	{10,1857} (exact) 	{10,1857} (exact)
Hyper-E notation 	E1857 (exact) 	E1857 (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)(658) 	m(1)(659)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(6156)\) 	\(f_2(6157)\)
Hardy hierarchy 	\(H_{\omega^2}(6156)\) 	\(H_{\omega^2}(6157)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 8+\omega 5+7}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 8+\omega 5+7}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{3708}\) (exact) 	\(1\times10^{3708}\) (exact)
Arrow notation 	\(10\uparrow 3708\) (exact) 	\(10\uparrow 3708\) (exact)
Steinhaus-Moser Notation 	1203[3] 	1204[3]
Chained arrow notation 	\(10\rightarrow 3708\) (exact) 	\(10\rightarrow 3708\) (exact)
Taro's multivariable Ackermann function	A(3,12314) 	A(3,12315)
BEAF & Bird's array notation 	{10,3708} (exact) 	{10,3708} (exact)
Hyper-E notation 	E3708 (exact) 	E3708 (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)(1203) 	m(1)(1204)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(12304)\) 	\(f_2(12305)\)
Hardy hierarchy 	\(H_{\omega^2}(12304)\) 	\(H_{\omega^2}(12305)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 3+\omega^2 7+8}}(10)\) (exact)	\(g_{\omega^{\omega^3 3+\omega^2 7+8}}(10)\) (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