Unoctogintanongentillion

An unoctogintanongentillion is equal to \(10^{2946}\) in the short scale and \(10^{5886}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 981st -illion number.
In the long scale, \(10^{2946}\) is called unnonagintaquadringentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2946}\) (exact) 	\(1\times10^{2946}\) (exact)
Arrow notation 	\(10\uparrow 2946\) (exact) 	\(10\uparrow 2946\) (exact)
Steinhaus-Moser Notation 	984[3] 	985[3]
Chained arrow notation 	\(10\rightarrow 2946\) (exact) 	\(10\rightarrow 2946\) (exact)
Taro's multivariable Ackermann function	A(3,9783) 	A(3,9784)
BEAF & Bird's array notation 	{10,2946} (exact) 	{10,2946} (exact)
Hyper-E notation 	E2946 (exact) 	E2946 (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)(984) 	m(1)(985)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(9773)\) 	\(f_2(9774)\)
Hardy hierarchy 	\(H_{\omega^2}(9773)\) 	\(H_{\omega^2}(9774)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 9+\omega 4+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 9+\omega 4+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{5886}\) (exact) 	\(1\times10^{5886}\) (exact)
Arrow notation 	\(10\uparrow 5886\) (exact) 	\(10\uparrow 5886\) (exact)
Steinhaus-Moser Notation 	1807[3] 	1808[3]
Chained arrow notation 	\(10\rightarrow 5886\) (exact) 	\(10\rightarrow 5886\) (exact)
Taro's multivariable Ackermann function	A(3,19549) 	A(3,19550)
BEAF & Bird's array notation 	{10,5886} (exact) 	{10,5886} (exact)
Hyper-E notation 	E5886 (exact) 	E5886 (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)(1807) 	m(1)(1808)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(19538)\) 	\(f_2(19539)\)
Hardy hierarchy 	\(H_{\omega^2}(19538)\) 	\(H_{\omega^2}(19539)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 5+\omega^2 8+\omega 8+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 5+\omega^2 8+\omega 8+6}}(10)\) (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