Quattuordeciducentillion

A quattuordeciducentillion is equal to \(10^{645}\) in the short scale and \(10^{1284}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 214th -illion number.
In the long scale, \(10^{645}\) is called septencentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{645}\) (exact) 	\(1\times10^{645}\) (exact)
Arrow notation 	\(10\uparrow 645\) (exact) 	\(10\uparrow 645\) (exact)
Steinhaus-Moser Notation 	265[3] 	266[3]
Chained arrow notation 	\(10\rightarrow 645\) (exact) 	\(10\rightarrow 645\) (exact)
Taro's multivariable Ackermann function	A(3,2139) 	A(3,2140)
BEAF & Bird's array notation 	{10,645} (exact) 	{10,645} (exact)
Hyper-E notation 	E645 (exact) 	E645 (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)(265) 	m(1)(266)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[18] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[19]
Fast-growing hierarchy 	\(f_2(2131)\) 	\(f_2(2132)\)
Hardy hierarchy 	\(H_{\omega^2}(2131)\) 	\(H_{\omega^2}(2132)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 6+\omega 4+5}}(10)\) (exact)	\(g_{\omega^{\omega^2 6+\omega 4+5}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1284}\) (exact) 	\(1\times10^{1284}\) (exact)
Arrow notation 	\(10\uparrow 1284\) (exact) 	\(10\uparrow 1284\) (exact)
Steinhaus-Moser Notation 	479[3] 	480[3]
Chained arrow notation 	\(10\rightarrow 1284\) (exact) 	\(10\rightarrow 1284\) (exact)
Taro's multivariable Ackermann function	A(3,4262) 	A(3,4263)
BEAF & Bird's array notation 	{10,1284} (exact) 	{10,1284} (exact)
Hyper-E notation 	E1284 (exact) 	E1284 (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)(479) 	m(1)(480)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(4253)\) 	\(f_2(4254)\)
Hardy hierarchy 	\(H_{\omega^2}(4253)\) 	\(H_{\omega^2}(4254)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 2+\omega 8+4}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 2+\omega 8+4}}(10)\) (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