Septendecioctingentillion

A septendecioctingentillion is equal to \(10^{2454}\) in the short scale and \(10^{4902}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 817th -illion number.
In the long scale, \(10^{2454}\) is called novenquadringentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2454}\) (exact) 	\(1\times10^{2454}\) (exact)
Arrow notation 	\(10\uparrow 2454\) (exact) 	\(10\uparrow 2454\) (exact)
Steinhaus-Moser Notation 	839[3] 	840[3]
Chained arrow notation 	\(10\rightarrow 2454\) (exact) 	\(10\rightarrow 2454\) (exact)
Taro's multivariable Ackermann function	A(3,8149) 	A(3,8150)
BEAF & Bird's array notation 	{10,2454} (exact) 	{10,2454} (exact)
Hyper-E notation 	E2454 (exact) 	E2454 (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)(839) 	m(1)(840)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(8139)\) 	\(f_2(8140)\)
Hardy hierarchy 	\(H_{\omega^2}(8139)\) 	\(H_{\omega^2}(8140)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 4+\omega 5+4}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 4+\omega 5+4}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{4902}\) (exact) 	\(1\times10^{4902}\) (exact)
Arrow notation 	\(10\uparrow 4902\) (exact) 	\(10\uparrow 4902\) (exact)
Steinhaus-Moser Notation 	1538[3] 	1539[3]
Chained arrow notation 	\(10\rightarrow 4902\) (exact) 	\(10\rightarrow 4902\) (exact)
Taro's multivariable Ackermann function	A(3,16281) 	A(3,16282)
BEAF & Bird's array notation 	{10,4902} (exact) 	{10,4902} (exact)
Hyper-E notation 	E4902 (exact) 	E4902 (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)(1538) 	m(1)(1539)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(16270)\) 	\(f_2(16271)\)
Hardy hierarchy 	\(H_{\omega^2}(16270)\) 	\(H_{\omega^2}(16271)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 4+\omega^2 9+2}}(10)\) (exact)	\(g_{\omega^{\omega^3 4+\omega^2 9+2}}(10)\) (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