Duosexagintasescentillion

A duosexagintasescentillion is equal to \(10^{1989}\) in the short scale and \(10^{3972}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 662nd -illion number.
In the long scale, \(10^{1989}\) is called untrigintatrecentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1989}\) (exact) 	\(1\times10^{1989}\) (exact)
Arrow notation 	\(10\uparrow 1989\) (exact) 	\(10\uparrow 1989\) (exact)
Steinhaus-Moser Notation 	699[3] 	700[3]
Chained arrow notation 	\(10\rightarrow 1989\) (exact) 	\(10\rightarrow 1989\) (exact)
Taro's multivariable Ackermann function	A(3,6604) 	A(3,6605)
BEAF & Bird's array notation 	{10,1989} (exact) 	{10,1989} (exact)
Hyper-E notation 	E1989 (exact) 	E1989 (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)(699) 	m(1)(700)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(6594)\) 	\(f_2(6595)\)
Hardy hierarchy 	\(H_{\omega^2}(6594)\) 	\(H_{\omega^2}(6595)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 9+\omega 8+9}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 9+\omega 8+9}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{3972}\) (exact) 	\(1\times10^{3972}\) (exact)
Arrow notation 	\(10\uparrow 3972\) (exact) 	\(10\uparrow 3972\) (exact)
Steinhaus-Moser Notation 	1278[3] 	1279[3]
Chained arrow notation 	\(10\rightarrow 3972\) (exact) 	\(10\rightarrow 3972\) (exact)
Taro's multivariable Ackermann function	A(3,13191) 	A(3,13192)
BEAF & Bird's array notation 	{10,3972} (exact) 	{10,3972} (exact)
Hyper-E notation 	E3972 (exact) 	E3972 (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)(1278) 	m(1)(1279)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(13181)\) 	\(f_2(13182)\)
Hardy hierarchy 	\(H_{\omega^2}(13181)\) 	\(H_{\omega^2}(13182)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 3+\omega^2 9+\omega 7+2}}(10)\) (exact)	\(g_{\omega^{\omega^3 3+\omega^2 9+\omega 7+2}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Tier 1 -illion numbers