Septendeciseptingentillion

A septendeciseptingentillion is equal to \(10^{2154}\) in the short scale and \(10^{4302}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 717th -illion number.
In the long scale, \(10^{2154}\) is called novenquinquagintatrecentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2154}\) (exact) 	\(1\times10^{2154}\) (exact)
Arrow notation 	\(10\uparrow 2154\) (exact) 	\(10\uparrow 2154\) (exact)
Steinhaus-Moser Notation 	749[3] 	750[3]
Chained arrow notation 	\(10\rightarrow 2154\) (exact) 	\(10\rightarrow 2154\) (exact)
Taro's multivariable Ackermann function	A(3,7152) 	A(3,7153)
BEAF & Bird's array notation 	{10,2154} (exact) 	{10,2154} (exact)
Hyper-E notation 	E2154 (exact) 	E2154 (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)(749) 	m(1)(750)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(7142)\) 	\(f_2(7143)\)
Hardy hierarchy 	\(H_{\omega^2}(7142)\) 	\(H_{\omega^2}(7143)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2+\omega 5+4}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2+\omega 5+4}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4302}\) (exact) 	\(1\times10^{4302}\) (exact)
Arrow notation 	\(10\uparrow 4302\) (exact) 	\(10\uparrow 4302\) (exact)
Steinhaus-Moser Notation 	1371[3] 	1372[3]
Chained arrow notation 	\(10\rightarrow 4302\) (exact) 	\(10\rightarrow 4302\) (exact)
Taro's multivariable Ackermann function	A(3,14287) 	A(3,14288)
BEAF & Bird's array notation 	{10,4302} (exact) 	{10,4302} (exact)
Hyper-E notation 	E4302 (exact) 	E4302 (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)(1371) 	m(1)(1372)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(14277)\) 	\(f_2(14278)\)
Hardy hierarchy 	\(H_{\omega^2}(14277)\) 	\(H_{\omega^2}(14278)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2 3+2}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2 3+2}}(10)\) (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