Septemoctogintaducentillion

A septemoctogintaducentillion is equal to \(10^{864}\) in the short scale and \(10^{1722}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 287th -illion number.
In the long scale, \(10^{864}\) is called quattuorquadragintacentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{864}\) (exact) 	\(1\times10^{864}\) (exact)
Arrow notation 	\(10\uparrow 864\) (exact) 	\(10\uparrow 864\) (exact)
Steinhaus-Moser Notation 	341[3] 	342[3]
Chained arrow notation 	\(10\rightarrow 864\) (exact) 	\(10\rightarrow 864\) (exact)
Taro's multivariable Ackermann function	A(3,2867) 	A(3,2868)
BEAF & Bird's array notation 	{10,864} (exact) 	{10,864} (exact)
Hyper-E notation 	E864 (exact) 	E864 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(8)\) 	\(s(1)^3(\lambda x.x+1)(9)\)
m(n) map 	m(1)(341) 	m(1)(342)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[48] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[49]
Fast-growing hierarchy 	\(f_2(2858)\) 	\(f_2(2859)\)
Hardy hierarchy 	\(H_{\omega^2}(2858)\) 	\(H_{\omega^2}(2859)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 8+\omega 6+4}}(10)\) (exact)	\(g_{\omega^{\omega^2 8+\omega 6+4}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1722}\) (exact) 	\(1\times10^{1722}\) (exact)
Arrow notation 	\(10\uparrow 1722\) (exact) 	\(10\uparrow 1722\) (exact)
Steinhaus-Moser Notation 	617[3] 	618[3]
Chained arrow notation 	\(10\rightarrow 1722\) (exact) 	\(10\rightarrow 1722\) (exact)
Taro's multivariable Ackermann function	A(3,5717) 	A(3,5718)
BEAF & Bird's array notation 	{10,1722} (exact) 	{10,1722} (exact)
Hyper-E notation 	E1722 (exact) 	E1722 (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)(617) 	m(1)(618)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(5707)\) 	\(f_2(5708)\)
Hardy hierarchy 	\(H_{\omega^2}(5707)\) 	\(H_{\omega^2}(5708)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 7+\omega 2+2}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 7+\omega 2+2}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 101 to 999 digits
Category:Tier 1 -illion numbers