Octosexagintanongentillion

An octosexagintanongentillion is equal to \(10^{2907}\) in the short scale and \(10^{5808}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 968th -illion number.
In the long scale, \(10^{2907}\) is called quattuoroctogintaquadringentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2907}\) (exact) 	\(1\times10^{2907}\) (exact)
Arrow notation 	\(10\uparrow 2907\) (exact) 	\(10\uparrow 2907\) (exact)
Steinhaus-Moser Notation 	972[3] 	973[3]
Chained arrow notation 	\(10\rightarrow 2907\) (exact) 	\(10\rightarrow 2907\) (exact)
Taro's multivariable Ackermann function	A(3,9653) 	A(3,9654)
BEAF & Bird's array notation 	{10,2907} (exact) 	{10,2907} (exact)
Hyper-E notation 	E2907 (exact) 	E2907 (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)(972) 	m(1)(973)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(9643)\) 	\(f_2(9644)\)
Hardy hierarchy 	\(H_{\omega^2}(9643)\) 	\(H_{\omega^2}(9644)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 9+7}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 9+7}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{5808}\) (exact) 	\(1\times10^{5808}\) (exact)
Arrow notation 	\(10\uparrow 5808\) (exact) 	\(10\uparrow 5808\) (exact)
Steinhaus-Moser Notation 	1786[3] 	1787[3]
Chained arrow notation 	\(10\rightarrow 5808\) (exact) 	\(10\rightarrow 5808\) (exact)
Taro's multivariable Ackermann function	A(3,19290) 	A(3,19291)
BEAF & Bird's array notation 	{10,5808} (exact) 	{10,5808} (exact)
Hyper-E notation 	E5808 (exact) 	E5808 (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)(1786) 	m(1)(1787)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(19279)\) 	\(f_2(19280)\)
Hardy hierarchy 	\(H_{\omega^2}(19279)\) 	\(H_{\omega^2}(19280)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 5+\omega^2 8+8}}(10)\) (exact)	\(g_{\omega^{\omega^3 5+\omega^2 8+8}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers