Sesquadragintaquingentillion

A sesquadragintaquingentillion is equal to \(10^{1641}\) in the short scale and \(10^{3276}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 546th -illion number.
In the long scale, \(10^{1641}\) is called treseptuagintaducentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1641}\) (exact) 	\(1\times10^{1641}\) (exact)
Arrow notation 	\(10\uparrow 1641\) (exact) 	\(10\uparrow 1641\) (exact)
Steinhaus-Moser Notation 	591[3] 	592[3]
Chained arrow notation 	\(10\rightarrow 1641\) (exact) 	\(10\rightarrow 1641\) (exact)
Taro's multivariable Ackermann function	A(3,5448) 	A(3,5449)
BEAF & Bird's array notation 	{10,1641} (exact) 	{10,1641} (exact)
Hyper-E notation 	E1641 (exact) 	E1641 (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)(591) 	m(1)(592)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(5438)\) 	\(f_2(5439)\)
Hardy hierarchy 	\(H_{\omega^2}(5438)\) 	\(H_{\omega^2}(5439)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 6+\omega 4+1}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 6+\omega 4+1}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{3276}\) (exact) 	\(1\times10^{3276}\) (exact)
Arrow notation 	\(10\uparrow 3276\) (exact) 	\(10\uparrow 3276\) (exact)
Steinhaus-Moser Notation 	1079[3] 	1080[3]
Chained arrow notation 	\(10\rightarrow 3276\) (exact) 	\(10\rightarrow 3276\) (exact)
Taro's multivariable Ackermann function	A(3,10879) 	A(3,10880)
BEAF & Bird's array notation 	{10,3276} (exact) 	{10,3276} (exact)
Hyper-E notation 	E3276 (exact) 	E3276 (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)(1079) 	m(1)(1080)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(10869)\) 	\(f_2(10870)\)
Hardy hierarchy 	\(H_{\omega^2}(10869)\) 	\(H_{\omega^2}(10870)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 3+\omega^2 2+\omega 7+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 3+\omega^2 2+\omega 7+6}}(10)\) (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