Quattuorquinquagintillion

A quattuorquinquagintillion is equal to 10165 in America, or 10324 in France and Germany by Conway-Wechsler system.Conway and Guy. (1995) "The book of Numbers" CopernicusSteve Olsen, Big-Ass NumbersThe Conway-Wechsler SystemExtensions to the -illions I: Henkle, Conway, and RowlettFish. Conway's zillion numbers, July 25, 2021
In the long scale which is commonly used in France and Germany, 10165 is called septemvigintilliard.
Quattuorquinquagintillion is notable for being the longest -illion number below a centillion.
== Decimal expansion ==
In short scale:
In long scale:
== Approximations ==
For short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{165}\) 	\(1\times10^{165}\)
Arrow notation 	\(10\uparrow165\) 	\(10\uparrow165\)
Steinhaus-Moser Notation 	85[3] 	86[3]
Copy notation 	9[165] 	10[83]
Taro's multivariable Ackermann function	A(3,545) 	A(3,546)
Pound-Star Notation 	#*((7))*9 	#*((8))*9
BEAF 	{10,165} 	{10,165}
Hyper-E notation 	E165 	E165
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)[378] 	(0)(0)(0)(0)(0)(0)[379]
Hyperfactorial array notation 	103! 	104!
Fast-growing hierarchy 	\(f_2(539)\) 	\(f_2(540)\)
Hardy hierarchy 	\(H_{\omega^2}(539)\) 	\(H_{\omega^2}(540)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2+\omega6+5}}(10)\)	\(g_{\omega^{\omega^2+\omega6+5}}(10)\)
For long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{324}\) 	\(1\times10^{324}\)
Arrow notation 	\(10\uparrow324\) 	\(10\uparrow324\)
Steinhaus-Moser Notation 	149[3] 	150[3]
Copy notation 	9[324] 	1[325]
Taro's multivariable Ackermann function	A(3,1073) 	A(3,1074)
Pound-Star Notation 	#*((3149))*11 	#*((3150))*11
BEAF 	{10,324} 	{10,324}
Hyper-E notation 	E324 	E324
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)[339] 	(0)(0)(0)(0)(0)(0)(0)[340]
Hyperfactorial array notation 	177! 	178!
Fast-growing hierarchy 	\(f_2(1\,066)\) 	\(f_2(1\,067)\)
Hardy hierarchy 	\(H_{\omega^2}(1\,066)\) 	\(H_{\omega^2}(1\,067)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^23+\omega2+4}}(10)\)	\(g_{\omega^{\omega^23+\omega2+4}}(10)\)
==List of prefixed numbers derived from quinquagintillion==
Name 	Short scale	Long scale
unquinquagintillion 	10156 	10306
duoquinquagintillion 	10159 	10312
tresquinquagintillion 	10162 	10318
quattuorquinquagintillion	10165 	10324
quinquinquagintillion 	10168 	10330
sesquinquagintillion 	10171 	10336
septenquinquagintillion 	10174 	10342
octoquinquagintillion 	10177 	10348
novenquinquagintillion 	10180 	10354
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Quinquagintillion
Category:Powers of 10 with squarefree exponent
Category:Numbers with 101 to 999 digits