Octovigintinongentillion

An octovigintinongentillion is equal to \(10^{2787}\) in the short scale and \(10^{5568}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 928th -illion number.
In the long scale, \(10^{2787}\) is called quattuorsexagintaquadringentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2787}\) (exact) 	\(1\times10^{2787}\) (exact)
Arrow notation 	\(10\uparrow 2787\) (exact) 	\(10\uparrow 2787\) (exact)
Steinhaus-Moser Notation 	937[3] 	938[3]
Chained arrow notation 	\(10\rightarrow 2787\) (exact) 	\(10\rightarrow 2787\) (exact)
Taro's multivariable Ackermann function	A(3,9255) 	A(3,9256)
BEAF & Bird's array notation 	{10,2787} (exact) 	{10,2787} (exact)
Hyper-E notation 	E2787 (exact) 	E2787 (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)(937) 	m(1)(938)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(9245)\) 	\(f_2(9246)\)
Hardy hierarchy 	\(H_{\omega^2}(9245)\) 	\(H_{\omega^2}(9246)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 7+\omega 8+7}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 7+\omega 8+7}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{5568}\) (exact) 	\(1\times10^{5568}\) (exact)
Arrow notation 	\(10\uparrow 5568\) (exact) 	\(10\uparrow 5568\) (exact)
Steinhaus-Moser Notation 	1720[3] 	1721[3]
Chained arrow notation 	\(10\rightarrow 5568\) (exact) 	\(10\rightarrow 5568\) (exact)
Taro's multivariable Ackermann function	A(3,18493) 	A(3,18494)
BEAF & Bird's array notation 	{10,5568} (exact) 	{10,5568} (exact)
Hyper-E notation 	E5568 (exact) 	E5568 (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)(1720) 	m(1)(1721)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(18482)\) 	\(f_2(18483)\)
Hardy hierarchy 	\(H_{\omega^2}(18482)\) 	\(H_{\omega^2}(18483)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 5+\omega^2 5+\omega 6+8}}(10)\) (exact)	\(g_{\omega^{\omega^3 5+\omega^2 5+\omega 6+8}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Powers of 10 with squarefree exponent
Category:Tier 1 -illion numbers