Senongentillion

A senongentillion is equal to \(10^{2721}\) in the short scale and \(10^{5436}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 906th -illion number.
In the long scale, \(10^{2721}\) is called tresquinquagintaquadringentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2721}\) (exact) 	\(1\times10^{2721}\) (exact)
Arrow notation 	\(10\uparrow 2721\) (exact) 	\(10\uparrow 2721\) (exact)
Steinhaus-Moser Notation 	918[3] 	919[3]
Chained arrow notation 	\(10\rightarrow 2721\) (exact) 	\(10\rightarrow 2721\) (exact)
Taro's multivariable Ackermann function	A(3,9035) 	A(3,9036)
BEAF & Bird's array notation 	{10,2721} (exact) 	{10,2721} (exact)
Hyper-E notation 	E2721 (exact) 	E2721 (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)(918) 	m(1)(919)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(9025)\) 	\(f_2(9026)\)
Hardy hierarchy 	\(H_{\omega^2}(9025)\) 	\(H_{\omega^2}(9026)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 7+\omega 2+1}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 7+\omega 2+1}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{5436}\) (exact) 	\(1\times10^{5436}\) (exact)
Arrow notation 	\(10\uparrow 5436\) (exact) 	\(10\uparrow 5436\) (exact)
Steinhaus-Moser Notation 	1684[3] 	1685[3]
Chained arrow notation 	\(10\rightarrow 5436\) (exact) 	\(10\rightarrow 5436\) (exact)
Taro's multivariable Ackermann function	A(3,18055) 	A(3,18056)
BEAF & Bird's array notation 	{10,5436} (exact) 	{10,5436} (exact)
Hyper-E notation 	E5436 (exact) 	E5436 (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)(1684) 	m(1)(1685)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(18043)\) 	\(f_2(18044)\)
Hardy hierarchy 	\(H_{\omega^2}(18043)\) 	\(H_{\omega^2}(18044)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 5+\omega^2 4+\omega 3+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 5+\omega^2 4+\omega 3+6}}(10)\) (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