Septenquinquagintacentillion

A septenquinquagintacentillion is equal to \(10^{474}\) in the short scale and \(10^{942}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 157th -illion number.
In the long scale, \(10^{474}\) is called novenseptuagintillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{474}\) (exact) 	\(1\times10^{474}\) (exact)
Arrow notation 	\(10\uparrow 474\) (exact) 	\(10\uparrow 474\) (exact)
Steinhaus-Moser Notation 	205[3] 	206[3]
Chained arrow notation 	\(10\rightarrow 474\) (exact) 	\(10\rightarrow 474\) (exact)
Taro's multivariable Ackermann function	A(3,1571) 	A(3,1572)
BEAF & Bird's array notation 	{10,474} (exact) 	{10,474} (exact)
Hyper-E notation 	E474 (exact) 	E474 (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)(205) 	m(1)(206)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)[71] 	(0)(0)(0)(0)(0)(0)(0)(0)[72]
Fast-growing hierarchy 	\(f_2(1563)\) 	\(f_2(1564)\)
Hardy hierarchy 	\(H_{\omega^2}(1563)\) 	\(H_{\omega^2}(1564)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 4+\omega 7+4}}(10)\) (exact)	\(g_{\omega^{\omega^2 4+\omega 7+4}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{942}\) (exact) 	\(1\times10^{942}\) (exact)
Arrow notation 	\(10\uparrow 942\) (exact) 	\(10\uparrow 942\) (exact)
Steinhaus-Moser Notation 	367[3] 	368[3]
Chained arrow notation 	\(10\rightarrow 942\) (exact) 	\(10\rightarrow 942\) (exact)
Taro's multivariable Ackermann function	A(3,3126) 	A(3,3127)
BEAF & Bird's array notation 	{10,942} (exact) 	{10,942} (exact)
Hyper-E notation 	E942 (exact) 	E942 (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)(367) 	m(1)(368)
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[69] 	(0)(0)(0)(0)(0)(0)(0)(0)(0)[70]
Fast-growing hierarchy 	\(f_2(3117)\) 	\(f_2(3118)\)
Hardy hierarchy 	\(H_{\omega^2}(3117)\) 	\(H_{\omega^2}(3118)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2 9+\omega 4+2}}(10)\) (exact)	\(g_{\omega^{\omega^2 9+\omega 4+2}}(10)\) (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