Septenseptingentillion

A septenseptingentillion is equal to \(10^{2124}\) in the short scale and \(10^{4242}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 707th -illion number.
In the long scale, \(10^{2124}\) is called quattuorquinquagintatrecentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2124}\) (exact) 	\(1\times10^{2124}\) (exact)
Arrow notation 	\(10\uparrow 2124\) (exact) 	\(10\uparrow 2124\) (exact)
Steinhaus-Moser Notation 	740[3] 	741[3]
Chained arrow notation 	\(10\rightarrow 2124\) (exact) 	\(10\rightarrow 2124\) (exact)
Taro's multivariable Ackermann function	A(3,7052) 	A(3,7053)
BEAF & Bird's array notation 	{10,2124} (exact) 	{10,2124} (exact)
Hyper-E notation 	E2124 (exact) 	E2124 (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)(740) 	m(1)(741)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(7042)\) 	\(f_2(7043)\)
Hardy hierarchy 	\(H_{\omega^2}(7042)\) 	\(H_{\omega^2}(7043)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2+\omega 2+4}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2+\omega 2+4}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4242}\) (exact) 	\(1\times10^{4242}\) (exact)
Arrow notation 	\(10\uparrow 4242\) (exact) 	\(10\uparrow 4242\) (exact)
Steinhaus-Moser Notation 	1354[3] 	1355[3]
Chained arrow notation 	\(10\rightarrow 4242\) (exact) 	\(10\rightarrow 4242\) (exact)
Taro's multivariable Ackermann function	A(3,14088) 	A(3,14089)
BEAF & Bird's array notation 	{10,4242} (exact) 	{10,4242} (exact)
Hyper-E notation 	E4242 (exact) 	E4242 (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)(1354) 	m(1)(1355)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(14077)\) 	\(f_2(14078)\)
Hardy hierarchy 	\(H_{\omega^2}(14077)\) 	\(H_{\omega^2}(14078)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2 2+\omega 4+2}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2 2+\omega 4+2}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers