Sedecioctingentillion

A sedecioctingentillion is equal to \(10^{2451}\) in the short scale and \(10^{4896}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 816th -illion number.
In the long scale, \(10^{2451}\) is called octoquadringentilliard.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2451}\) (exact) 	\(1\times10^{2451}\) (exact)
Arrow notation 	\(10\uparrow 2451\) (exact) 	\(10\uparrow 2451\) (exact)
Steinhaus-Moser Notation 	838[3] 	839[3]
Chained arrow notation 	\(10\rightarrow 2451\) (exact) 	\(10\rightarrow 2451\) (exact)
Taro's multivariable Ackermann function	A(3,8139) 	A(3,8140)
BEAF & Bird's array notation 	{10,2451} (exact) 	{10,2451} (exact)
Hyper-E notation 	E2451 (exact) 	E2451 (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)(838) 	m(1)(839)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(8129)\) 	\(f_2(8130)\)
Hardy hierarchy 	\(H_{\omega^2}(8129)\) 	\(H_{\omega^2}(8130)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 4+\omega 5+1}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 4+\omega 5+1}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4896}\) (exact) 	\(1\times10^{4896}\) (exact)
Arrow notation 	\(10\uparrow 4896\) (exact) 	\(10\uparrow 4896\) (exact)
Steinhaus-Moser Notation 	1536[3] 	1537[3]
Chained arrow notation 	\(10\rightarrow 4896\) (exact) 	\(10\rightarrow 4896\) (exact)
Taro's multivariable Ackermann function	A(3,16261) 	A(3,16262)
BEAF & Bird's array notation 	{10,4896} (exact) 	{10,4896} (exact)
Hyper-E notation 	E4896 (exact) 	E4896 (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)(1536) 	m(1)(1537)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(16250)\) 	\(f_2(16251)\)
Hardy hierarchy 	\(H_{\omega^2}(16250)\) 	\(H_{\omega^2}(16251)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2 8+\omega 9+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2 8+\omega 9+6}}(10)\) (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