Senonagintanongentillion

A senonagintanongentillion is equal to \(10^{2991}\) in the short scale and \(10^{5976}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 996th -illion number.
In the long scale, \(10^{2991}\) is called octononagintaquadringentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2991}\) (exact) 	\(1\times10^{2991}\) (exact)
Arrow notation 	\(10\uparrow 2991\) (exact) 	\(10\uparrow 2991\) (exact)
Steinhaus-Moser Notation 	997[3] 	998[3]
Chained arrow notation 	\(10\rightarrow 2991\) (exact) 	\(10\rightarrow 2991\) (exact)
Taro's multivariable Ackermann function	A(3,9932) 	A(3,9933)
BEAF & Bird's array notation 	{10,2991} (exact) 	{10,2991} (exact)
Hyper-E notation 	E2991 (exact) 	E2991 (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)(997) 	m(1)(998)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(9922)\) 	\(f_2(9923)\)
Hardy hierarchy 	\(H_{\omega^2}(9922)\) 	\(H_{\omega^2}(9923)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 9+\omega 9+1}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 9+\omega 9+1}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{5976}\) (exact) 	\(1\times10^{5976}\) (exact)
Arrow notation 	\(10\uparrow 5976\) (exact) 	\(10\uparrow 5976\) (exact)
Steinhaus-Moser Notation 	1831[3] 	1832[3]
Chained arrow notation 	\(10\rightarrow 5976\) (exact) 	\(10\rightarrow 5976\) (exact)
Taro's multivariable Ackermann function	A(3,19848) 	A(3,19849)
BEAF & Bird's array notation 	{10,5976} (exact) 	{10,5976} (exact)
Hyper-E notation 	E5976 (exact) 	E5976 (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)(1831) 	m(1)(1832)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(19837)\) 	\(f_2(19838)\)
Hardy hierarchy 	\(H_{\omega^2}(19837)\) 	\(H_{\omega^2}(19838)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 5+\omega^2 9+\omega 7+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 5+\omega^2 9+\omega 7+6}}(10)\) (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