Senonagintaquadringentillion

A senonagintaquadringentillion is equal to \(10^{1491}\) in the short scale and \(10^{2976}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 496th -illion number.
In the long scale, \(10^{1491}\) is called octoquadragintaducentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1491}\) (exact) 	\(1\times10^{1491}\) (exact)
Arrow notation 	\(10\uparrow 1491\) (exact) 	\(10\uparrow 1491\) (exact)
Steinhaus-Moser Notation 	544[3] 	545[3]
Chained arrow notation 	\(10\rightarrow 1491\) (exact) 	\(10\rightarrow 1491\) (exact)
Taro's multivariable Ackermann function	A(3,4949) 	A(3,4950)
BEAF & Bird's array notation 	{10,1491} (exact) 	{10,1491} (exact)
Hyper-E notation 	E1491 (exact) 	E1491 (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)(544) 	m(1)(545)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(4940)\) 	\(f_2(4941)\)
Hardy hierarchy 	\(H_{\omega^2}(4940)\) 	\(H_{\omega^2}(4941)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 4+\omega 9+1}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 4+\omega 9+1}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2976}\) (exact) 	\(1\times10^{2976}\) (exact)
Arrow notation 	\(10\uparrow 2976\) (exact) 	\(10\uparrow 2976\) (exact)
Steinhaus-Moser Notation 	993[3] 	994[3]
Chained arrow notation 	\(10\rightarrow 2976\) (exact) 	\(10\rightarrow 2976\) (exact)
Taro's multivariable Ackermann function	A(3,9883) 	A(3,9884)
BEAF & Bird's array notation 	{10,2976} (exact) 	{10,2976} (exact)
Hyper-E notation 	E2976 (exact) 	E2976 (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)(993) 	m(1)(994)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(9872)\) 	\(f_2(9873)\)
Hardy hierarchy 	\(H_{\omega^2}(9872)\) 	\(H_{\omega^2}(9873)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 9+\omega 7+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 9+\omega 7+6}}(10)\) (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