Octovigintiducentillion

An octovigintiducentillion is equal to \(10^{687}\) in the short scale and \(10^{1368}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 228th -illion number.
In the long scale, \(10^{687}\) is called quattuordecicentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{687}\) (exact) 	\(1\times10^{687}\) (exact)
Arrow notation 	\(10\uparrow 687\) (exact) 	\(10\uparrow 687\) (exact)
Steinhaus-Moser Notation 	280[3] 	281[3]
Chained arrow notation 	\(10\rightarrow 687\) (exact) 	\(10\rightarrow 687\) (exact)
Taro's multivariable Ackermann function	A(3,2279) 	A(3,2280)
BEAF & Bird's array notation 	{10,687} (exact) 	{10,687} (exact)
Hyper-E notation 	E687 (exact) 	E687 (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)(280) 	m(1)(281)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[21] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[22]
Fast-growing hierarchy 	\(f_2(2271)\) 	\(f_2(2272)\)
Hardy hierarchy 	\(H_{\omega^2}(2271)\) 	\(H_{\omega^2}(2272)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 6+\omega 8+7}}(10)\) (exact)	\(g_{\omega^{\omega^2 6+\omega 8+7}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1368}\) (exact) 	\(1\times10^{1368}\) (exact)
Arrow notation 	\(10\uparrow 1368\) (exact) 	\(10\uparrow 1368\) (exact)
Steinhaus-Moser Notation 	505[3] 	506[3]
Chained arrow notation 	\(10\rightarrow 1368\) (exact) 	\(10\rightarrow 1368\) (exact)
Taro's multivariable Ackermann function	A(3,4541) 	A(3,4542)
BEAF & Bird's array notation 	{10,1368} (exact) 	{10,1368} (exact)
Hyper-E notation 	E1368 (exact) 	E1368 (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)(505) 	m(1)(506)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(4532)\) 	\(f_2(4533)\)
Hardy hierarchy 	\(H_{\omega^2}(4532)\) 	\(H_{\omega^2}(4533)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 3+\omega 6+8}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 3+\omega 6+8}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 101 to 999 digits
Category:Powers of 10 with squarefree exponent
Category:Tier 1 -illion numbers