Octovigintiquadringentillion

An octovigintiquadringentillion is equal to \(10^{1287}\) in the short scale and \(10^{2568}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 428th -illion number.
In the long scale, \(10^{1287}\) is called quattuordeciducentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1287}\) (exact) 	\(1\times10^{1287}\) (exact)
Arrow notation 	\(10\uparrow 1287\) (exact) 	\(10\uparrow 1287\) (exact)
Steinhaus-Moser Notation 	480[3] 	481[3]
Chained arrow notation 	\(10\rightarrow 1287\) (exact) 	\(10\rightarrow 1287\) (exact)
Taro's multivariable Ackermann function	A(3,4272) 	A(3,4273)
BEAF & Bird's array notation 	{10,1287} (exact) 	{10,1287} (exact)
Hyper-E notation 	E1287 (exact) 	E1287 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(8)\) 	\(s(1)^3(\lambda x.x+1)(9)\)
m(n) map 	m(1)(480) 	m(1)(481)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(4263)\) 	\(f_2(4264)\)
Hardy hierarchy 	\(H_{\omega^2}(4263)\) 	\(H_{\omega^2}(4264)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 2+\omega 8+7}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 2+\omega 8+7}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2568}\) (exact) 	\(1\times10^{2568}\) (exact)
Arrow notation 	\(10\uparrow 2568\) (exact) 	\(10\uparrow 2568\) (exact)
Steinhaus-Moser Notation 	873[3] 	874[3]
Chained arrow notation 	\(10\rightarrow 2568\) (exact) 	\(10\rightarrow 2568\) (exact)
Taro's multivariable Ackermann function	A(3,8527) 	A(3,8528)
BEAF & Bird's array notation 	{10,2568} (exact) 	{10,2568} (exact)
Hyper-E notation 	E2568 (exact) 	E2568 (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)(873) 	m(1)(874)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(8517)\) 	\(f_2(8518)\)
Hardy hierarchy 	\(H_{\omega^2}(8517)\) 	\(H_{\omega^2}(8518)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 5+\omega 6+8}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 5+\omega 6+8}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers