Sesquinquagintaducentillion

A sesquinquagintaducentillion is equal to \(10^{771}\) in the short scale and \(10^{1536}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 256th -illion number.
In the long scale, \(10^{771}\) is called octoviginticentilliard.
SuperJedi224 coined bi-exitillion for the short scale value, and is equal to H(162) = H(256) in H* function.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{771}\) (exact) 	\(1\times10^{771}\) (exact)
Arrow notation 	\(10\uparrow 771\) (exact) 	\(10\uparrow 771\) (exact)
Steinhaus-Moser Notation 	309[3] 	310[3]
Chained arrow notation 	\(10\rightarrow 771\) (exact) 	\(10\rightarrow 771\) (exact)
Taro's multivariable Ackermann function	A(3,2558) 	A(3,2559)
BEAF & Bird's array notation 	{10,771} (exact) 	{10,771} (exact)
Hyper-E notation 	E771 (exact) 	E771 (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)(309) 	m(1)(310)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[32] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[33]
Fast-growing hierarchy 	\(f_2(2549)\) 	\(f_2(2550)\)
Hardy hierarchy 	\(H_{\omega^2}(2549)\) 	\(H_{\omega^2}(2550)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 7+\omega 7+1}}(10)\) (exact)	\(g_{\omega^{\omega^2 7+\omega 7+1}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1536}\) (exact) 	\(1\times10^{1536}\) (exact)
Arrow notation 	\(10\uparrow 1536\) (exact) 	\(10\uparrow 1536\) (exact)
Steinhaus-Moser Notation 	559[3] 	560[3]
Chained arrow notation 	\(10\rightarrow 1536\) (exact) 	\(10\rightarrow 1536\) (exact)
Taro's multivariable Ackermann function	A(3,5099) 	A(3,5100)
BEAF & Bird's array notation 	{10,1536} (exact) 	{10,1536} (exact)
Hyper-E notation 	E1536 (exact) 	E1536 (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)(559) 	m(1)(560)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(5090)\) 	\(f_2(5091)\)
Hardy hierarchy 	\(H_{\omega^2}(5090)\) 	\(H_{\omega^2}(5091)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 5+\omega 3+6}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 5+\omega 3+6}}(10)\) (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