Duoducentillion

A duoducentillion is equal to \(10^{609}\) in the short scale and \(10^{1212}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 202nd -illion number.
In the long scale, \(10^{609}\) is called uncentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{609}\) (exact) 	\(1\times10^{609}\) (exact)
Arrow notation 	\(10\uparrow 609\) (exact) 	\(10\uparrow 609\) (exact)
Steinhaus-Moser Notation 	253[3] 	254[3]
Chained arrow notation 	\(10\rightarrow 609\) (exact) 	\(10\rightarrow 609\) (exact)
Taro's multivariable Ackermann function	A(3,2020) 	A(3,2021)
BEAF & Bird's array notation 	{10,609} (exact) 	{10,609} (exact)
Hyper-E notation 	E609 (exact) 	E609 (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)(253) 	m(1)(254)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[15] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[16]
Fast-growing hierarchy 	\(f_2(2012)\) 	\(f_2(2013)\)
Hardy hierarchy 	\(H_{\omega^2}(2012)\) 	\(H_{\omega^2}(2013)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 6+9}}(10)\) (exact)	\(g_{\omega^{\omega^2 6+9}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1212}\) (exact) 	\(1\times10^{1212}\) (exact)
Arrow notation 	\(10\uparrow 1212\) (exact) 	\(10\uparrow 1212\) (exact)
Steinhaus-Moser Notation 	455[3] 	456[3]
Chained arrow notation 	\(10\rightarrow 1212\) (exact) 	\(10\rightarrow 1212\) (exact)
Taro's multivariable Ackermann function	A(3,4023) 	A(3,4024)
BEAF & Bird's array notation 	{10,1212} (exact) 	{10,1212} (exact)
Hyper-E notation 	E1212 (exact) 	E1212 (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)(455) 	m(1)(456)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(4014)\) 	\(f_2(4015)\)
Hardy hierarchy 	\(H_{\omega^2}(4014)\) 	\(H_{\omega^2}(4015)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 2+\omega+2}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 2+\omega+2}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 101 to 999 digits
Category:Powers of 10 with squarefree exponent
Category:Tier 1 -illion numbers