Octovigintitrecentillion

An octovigintitrecentillion is equal to \(10^{987}\) in the short scale and \(10^{1968}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 328th -illion number.
In the long scale, \(10^{987}\) is called quattuorsexagintacentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{987}\) (exact) 	\(1\times10^{987}\) (exact)
Arrow notation 	\(10\uparrow 987\) (exact) 	\(10\uparrow 987\) (exact)
Steinhaus-Moser Notation 	382[3] 	383[3]
Chained arrow notation 	\(10\rightarrow 987\) (exact) 	\(10\rightarrow 987\) (exact)
Taro's multivariable Ackermann function	A(3,3275) 	A(3,3276)
BEAF & Bird's array notation 	{10,987} (exact) 	{10,987} (exact)
Hyper-E notation 	E987 (exact) 	E987 (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)(382) 	m(1)(383)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(3267)\) 	\(f_2(3268)\)
Hardy hierarchy 	\(H_{\omega^2}(3267)\) 	\(H_{\omega^2}(3268)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 9+\omega 8+7}}(10)\) (exact)	\(g_{\omega^{\omega^2 9+\omega 8+7}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1968}\) (exact) 	\(1\times10^{1968}\) (exact)
Arrow notation 	\(10\uparrow 1968\) (exact) 	\(10\uparrow 1968\) (exact)
Steinhaus-Moser Notation 	692[3] 	693[3]
Chained arrow notation 	\(10\rightarrow 1968\) (exact) 	\(10\rightarrow 1968\) (exact)
Taro's multivariable Ackermann function	A(3,6534) 	A(3,6535)
BEAF & Bird's array notation 	{10,1968} (exact) 	{10,1968} (exact)
Hyper-E notation 	E1968 (exact) 	E1968 (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)(692) 	m(1)(693)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(6524)\) 	\(f_2(6525)\)
Hardy hierarchy 	\(H_{\omega^2}(6524)\) 	\(H_{\omega^2}(6525)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 9+\omega 6+8}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 9+\omega 6+8}}(10)\) (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