Septendeciquadringentillion

A septendeciquadringentillion is equal to \(10^{1254}\) in the short scale and \(10^{2502}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 417th -illion number.
In the long scale, \(10^{1254}\) is called novenducentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{1254}\) (exact) 	\(1\times10^{1254}\) (exact)
Arrow notation 	\(10\uparrow 1254\) (exact) 	\(10\uparrow 1254\) (exact)
Steinhaus-Moser Notation 	469[3] 	470[3]
Chained arrow notation 	\(10\rightarrow 1254\) (exact) 	\(10\rightarrow 1254\) (exact)
Taro's multivariable Ackermann function	A(3,4162) 	A(3,4163)
BEAF & Bird's array notation 	{10,1254} (exact) 	{10,1254} (exact)
Hyper-E notation 	E1254 (exact) 	E1254 (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)(469) 	m(1)(470)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(4153)\) 	\(f_2(4154)\)
Hardy hierarchy 	\(H_{\omega^2}(4153)\) 	\(H_{\omega^2}(4154)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3+\omega^2 2+\omega 5+4}}(10)\) (exact)	\(g_{\omega^{\omega^3+\omega^2 2+\omega 5+4}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2502}\) (exact) 	\(1\times10^{2502}\) (exact)
Arrow notation 	\(10\uparrow 2502\) (exact) 	\(10\uparrow 2502\) (exact)
Steinhaus-Moser Notation 	853[3] 	854[3]
Chained arrow notation 	\(10\rightarrow 2502\) (exact) 	\(10\rightarrow 2502\) (exact)
Taro's multivariable Ackermann function	A(3,8308) 	A(3,8309)
BEAF & Bird's array notation 	{10,2502} (exact) 	{10,2502} (exact)
Hyper-E notation 	E2502 (exact) 	E2502 (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)(853) 	m(1)(854)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(8298)\) 	\(f_2(8299)\)
Hardy hierarchy 	\(H_{\omega^2}(8298)\) 	\(H_{\omega^2}(8299)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 5+2}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 5+2}}(10)\) (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