Septemvigintillion

A septemvigintillion or septenvigintillion is equal to \(10^{84}\) in the short scale, or \(10^{162}\) in the long scale. Septemvigintillion is a name based on Conway and Guy's naming system,Extensions to the -illions I: Henkle, Conway, and RowlettConway and Guy. (1995) "The book of Numbers" CopernicusThe Conway-Wechsler SystemFish, Conway's zillion numbers, 2022/02/20. and septenvigintillion is a name based on Russ Rowlett's naming system.Names for Large Numbers (Internet archive, archived at 6 June, 2002)
Sbiis Saibian uses the term viginti-septillion for this number.Sbiis Saibian's Ultimate Large Number List Part I
SuperJedi224 calls this number tre-tritillion-Illions - Almost Infinite.
== Examples ==
* The total number of protons in the roughly equals to 4 septemvigintillion in short scale.The total number of protons in the extragalactic background light
== Approximations ==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{84}\) 	\(1\times10^{84}\)
Arrow notation 	\(10\uparrow84\) 	\(10\uparrow84\)
Steinhaus-Moser Notation 	49[3] 	50[3]
Copy notation 	9[84] 	1[85]
Taro's multivariable Ackermann function	A(3,276) 	A(3,277)
Pound-Star Notation 	#*(10,1,0,0,0,4,3)*7 	#*(6,0,0,9,1)*13
BEAF 	{10,84} 	{10,84}
Bashicu matrix system 	(0)(0)(0)(0)(0)[421] 	(0)(0)(0)(0)(0)[422]
Hyperfactorial array notation 	61! 	62!
Fast-growing hierarchy 	\(f_2(270)\) 	\(f_2(271)\)
Hardy hierarchy 	\(H_{\omega^2}(270)\) 	\(H_{\omega^2}(271)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega8+4}}(10)\)	\(g_{\omega^{\omega8+4}}(10)\)
== List of prefixed numbers derived from vigintillion ==
Name 	Short scale	Long scale
unvigintillion 	1066 	10126
duovigintillion 	1069 	10132
tresvigintillion 	1072 	10138
quattuorvigintillion	1075 	10144
quinvigintillion 	1078 	10150
sesvigintillion 	1081 	10156
septemvigintillion 	1084 	10162
octovigintillion 	1087 	10168
novemvigintillion 	1090 	10174
== Sources ==
== See also ==
Category:Numbers
Category:Illion
Category:Class 2
Category:Vigintillion
Category:Numbers with 30 to 100 digits
Category:Numbers with 101 to 999 digits