Octoquadragintanongentillion

An octoquadragintanongentillion is equal to \(10^{2847}\) in the short scale and \(10^{5688}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 948th -illion number.
In the long scale, \(10^{2847}\) is called quattuorseptuagintaquadringentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2847}\) (exact) 	\(1\times10^{2847}\) (exact)
Arrow notation 	\(10\uparrow 2847\) (exact) 	\(10\uparrow 2847\) (exact)
Steinhaus-Moser Notation 	955[3] 	956[3]
Chained arrow notation 	\(10\rightarrow 2847\) (exact) 	\(10\rightarrow 2847\) (exact)
Taro's multivariable Ackermann function	A(3,9454) 	A(3,9455)
BEAF & Bird's array notation 	{10,2847} (exact) 	{10,2847} (exact)
Hyper-E notation 	E2847 (exact) 	E2847 (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)(955) 	m(1)(956)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(9444)\) 	\(f_2(9445)\)
Hardy hierarchy 	\(H_{\omega^2}(9444)\) 	\(H_{\omega^2}(9445)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 8+\omega 4+7}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 8+\omega 4+7}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{5688}\) (exact) 	\(1\times10^{5688}\) (exact)
Arrow notation 	\(10\uparrow 5688\) (exact) 	\(10\uparrow 5688\) (exact)
Steinhaus-Moser Notation 	1753[3] 	1754[3]
Chained arrow notation 	\(10\rightarrow 5688\) (exact) 	\(10\rightarrow 5688\) (exact)
Taro's multivariable Ackermann function	A(3,18892) 	A(3,18893)
BEAF & Bird's array notation 	{10,5688} (exact) 	{10,5688} (exact)
Hyper-E notation 	E5688 (exact) 	E5688 (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)(1753) 	m(1)(1754)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(18880)\) 	\(f_2(18881)\)
Hardy hierarchy 	\(H_{\omega^2}(18880)\) 	\(H_{\omega^2}(18881)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 5+\omega^2 6+\omega 8+8}}(10)\) (exact)	\(g_{\omega^{\omega^3 5+\omega^2 6+\omega 8+8}}(10)\) (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