Senonagintaseptingentillion

A senonagintaseptingentillion is equal to \(10^{2391}\) in the short scale and \(10^{4776}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 796th -illion number.
In the long scale, \(10^{2391}\) is called octononagintatrecentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2391}\) (exact) 	\(1\times10^{2391}\) (exact)
Arrow notation 	\(10\uparrow 2391\) (exact) 	\(10\uparrow 2391\) (exact)
Steinhaus-Moser Notation 	820[3] 	821[3]
Chained arrow notation 	\(10\rightarrow 2391\) (exact) 	\(10\rightarrow 2391\) (exact)
Taro's multivariable Ackermann function	A(3,7939) 	A(3,7940)
BEAF & Bird's array notation 	{10,2391} (exact) 	{10,2391} (exact)
Hyper-E notation 	E2391 (exact) 	E2391 (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)(820) 	m(1)(821)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(7929)\) 	\(f_2(7930)\)
Hardy hierarchy 	\(H_{\omega^2}(7929)\) 	\(H_{\omega^2}(7930)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 3+\omega 9+1}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 3+\omega 9+1}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4776}\) (exact) 	\(1\times10^{4776}\) (exact)
Arrow notation 	\(10\uparrow 4776\) (exact) 	\(10\uparrow 4776\) (exact)
Steinhaus-Moser Notation 	1503[3] 	1504[3]
Chained arrow notation 	\(10\rightarrow 4776\) (exact) 	\(10\rightarrow 4776\) (exact)
Taro's multivariable Ackermann function	A(3,15862) 	A(3,15863)
BEAF & Bird's array notation 	{10,4776} (exact) 	{10,4776} (exact)
Hyper-E notation 	E4776 (exact) 	E4776 (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)(1503) 	m(1)(1504)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(15851)\) 	\(f_2(15852)\)
Hardy hierarchy 	\(H_{\omega^2}(15851)\) 	\(H_{\omega^2}(15852)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2 7+\omega 7+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2 7+\omega 7+6}}(10)\) (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