Treseptuagintillion

A treseptuagintillion is equal to 10222 in the short scale, or 10438 in the long scale by Conway and Guy's naming system.Conway and Guy. (1995) "The book of Numbers" CopernicusRobert Munafo The Conway-Wechsler System. Retrieved 2023-02-05.Steve Olsen Big-Ass Numbers. Retrieved 2023-02-05.Fish 
In the long scale which is commonly used in France and Germany, 10222 is called septentrigintillion.
==Approximations==
For short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{222}\) 	\(1\times10^{222}\)
Arrow notation 	\(10\uparrow222\) 	\(10\uparrow222\)
Steinhaus-Moser Notation 	108[3] 	109[3]
Copy notation 	9[222] 	1[223]
Taro's multivariable Ackermann function	A(3,734) 	A(3,735)
Pound-Star Notation 	#*((21))*10 	#*((22))*10
BEAF 	{10,222} 	{10,222}
Hyper-E notation 	E222 	E222
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)[2942] 	(0)(0)(0)(0)(0)(0)[2943]
Hyperfactorial array notation 	131! 	132!
Fast-growing hierarchy 	\(f_2(727)\) 	\(f_2(728)\)
Hardy hierarchy 	\(H_{\omega^2}(727)\) 	\(H_{\omega^2}(728)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^22+\omega2+2}}(10)\)	\(g_{\omega^{\omega^22+\omega2+2}}(10)\)
For long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{438}\) 	\(1\times10^{438}\)
Arrow notation 	\(10\uparrow438\) 	\(10\uparrow438\)
Steinhaus-Moser Notation 	191[3] 	192[3]
Copy notation 	9[438] 	1[439]
Taro's multivariable Ackermann function	A(3,1452) 	A(3,1453)
Pound-Star Notation 	#*((207))*13 	#*((208))*13
BEAF 	{10,438} 	{10,438}
Hyper-E notation 	E438 	E438
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)[2641] 	(0)(0)(0)(0)(0)(0)(0)[2642]
Hyperfactorial array notation 	227! 	228!
Fast-growing hierarchy 	\(f_2(1444)\) 	\(f_2(1445)\)
Hardy hierarchy 	\(H_{\omega^2}(1444)\) 	\(H_{\omega^2}(1445)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^24+\omega3+8}}(10)\)	\(g_{\omega^{\omega^24+\omega3+8}}(10)\)
==List of prefixed numbers derived from septuagintillion==
Name 	Short scale	Long scale
unseptuagintillion 	10216 	10426
duoseptuagintillion 	10219 	10432
treseptuagintillion 	10222 	10438
quattuorseptuagintillion	10225 	10444
quinseptuagintillion 	10228 	10450
seseptuagintillion 	10231 	10456
septenseptuagintillion 	10234 	10462
octoseptuagintillion 	10237 	10468
novenseptuagintillion 	10240 	10474
== Sources ==
== See also ==
Category:Numbers
Category:Illion
Category:Class 2
Category:Septuagintillion
Category:Powers of 10 with squarefree exponent
Category:Numbers with 101 to 999 digits