Septenquadragintasescentillion

A septenquadragintasescentillion is equal to \(10^{1944}\) in the short scale and \(10^{3882}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 647th -illion number.
In the long scale, \(10^{1944}\) is called quattuorvigintitrecentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1944}\) (exact) 	\(1\times10^{1944}\) (exact)
Arrow notation 	\(10\uparrow 1944\) (exact) 	\(10\uparrow 1944\) (exact)
Steinhaus-Moser Notation 	685[3] 	686[3]
Chained arrow notation 	\(10\rightarrow 1944\) (exact) 	\(10\rightarrow 1944\) (exact)
Taro's multivariable Ackermann function	A(3,6454) 	A(3,6455)
BEAF & Bird's array notation 	{10,1944} (exact) 	{10,1944} (exact)
Hyper-E notation 	E1944 (exact) 	E1944 (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)(685) 	m(1)(686)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(6445)\) 	\(f_2(6446)\)
Hardy hierarchy 	\(H_{\omega^2}(6445)\) 	\(H_{\omega^2}(6446)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 9+\omega 4+4}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 9+\omega 4+4}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{3882}\) (exact) 	\(1\times10^{3882}\) (exact)
Arrow notation 	\(10\uparrow 3882\) (exact) 	\(10\uparrow 3882\) (exact)
Steinhaus-Moser Notation 	1253[3] 	1254[3]
Chained arrow notation 	\(10\rightarrow 3882\) (exact) 	\(10\rightarrow 3882\) (exact)
Taro's multivariable Ackermann function	A(3,12892) 	A(3,12893)
BEAF & Bird's array notation 	{10,3882} (exact) 	{10,3882} (exact)
Hyper-E notation 	E3882 (exact) 	E3882 (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)(1253) 	m(1)(1254)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(12882)\) 	\(f_2(12883)\)
Hardy hierarchy 	\(H_{\omega^2}(12882)\) 	\(H_{\omega^2}(12883)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 3+\omega^2 8+\omega 8+2}}(10)\) (exact)	\(g_{\omega^{\omega^3 3+\omega^2 8+\omega 8+2}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers