Ducentillion

A ducentillion is equal to \(10^{603}\) in the short scale and \(10^{1200}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus or by Jonathan Bowers systemIllion Numbers as it is the 200th -illion number.
In the long scale, \(10^{603}\) is called centilliard.
Landon Curt Noll coined the name duocentillion for this number (not to be confused with Conway and Bowers' duocentillion, which equals 10309 in the short scale).English names of the first 10000 powers of 10 - American System without dashesEnglish names of the first 10000 powers of 10 - European System without dashes
Aarex Tiaokhiao gave the name bicemillionAarex Tiaokhiao's illion numbers or dihectillion,https://sites.google.com/site/aarexnumbers/home/ch2/at1i referring to the value of this number.
BlankEntity calls this number Ceedol.BlankEntity's Googology Site
== Decimal expansion ==
Written out in decimal form ducentillion (in the short scale) is:
In long scale:
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{603}\) (exact) 	\(1\times10^{603}\) (exact)
Arrow notation 	\(10\uparrow 603\) (exact) 	\(10\uparrow 603\) (exact)
Steinhaus-Moser Notation 	251[3] 	252[3]
Chained arrow notation 	\(10\rightarrow 603\) (exact) 	\(10\rightarrow 603\) (exact)
Taro's multivariable Ackermann function	A(3,2000) 	A(3,2001)
BEAF & Bird's array notation 	{10,603} (exact) 	{10,603} (exact)
Hyper-E notation 	E603 (exact) 	E603 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(7)\) 	\(s(1)^3(\lambda x.x+1)(8)\)
m(n) map 	m(1)(251) 	m(1)(252)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[15] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[16]
Copy notation 	9[603] 	10[302]
H* function 	H(200) 	H(200)
Pound-Star Notation 	#*((147))*15 	#*((148))*15
Hyperfactorial array notation 	295! 	296!
Fast-growing hierarchy 	\(f_2(1992)\) 	\(f_2(1993)\)
Hardy hierarchy 	\(H_{\omega^2}(1992)\) 	\(H_{\omega^2}(1993)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 6+3}}(10)\) (exact)	\(g_{\omega^{\omega^2 6+3}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1200}\) (exact) 	\(1\times10^{1200}\) (exact)
Arrow notation 	\(10\uparrow 1200\) (exact) 	\(10\uparrow 1200\) (exact)
Steinhaus-Moser Notation 	451[3] 	452[3]
Chained arrow notation 	\(10\rightarrow 1200\) (exact) 	\(10\rightarrow 1200\) (exact)
Taro's multivariable Ackermann function	A(3,3983) 	A(3,3984)
BEAF & Bird's array notation 	{10,1200} (exact) 	{10,1200} (exact)
Hyper-E notation 	E1200 (exact) 	E1200 (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)(451) 	m(1)(452)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Copy notation 	9[1200] 	1[1201]
Pound-Star Notation 	#*((1182))*20 	#*((1183))*20
Hyperfactorial array notation 	524! 	525!
Fast-growing hierarchy 	\(f_2(3974)\) 	\(f_2(3975)\)
Hardy hierarchy 	\(H_{\omega^2}(3974)\) 	\(H_{\omega^2}(3975)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 2}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 2}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 101 to 999 digits
Category:Tier 1 -illion numbers