Attillion

Attillion is equal to \(10^{3\times10^{18}+3}\), or \(10^{3\text{ quintillion }+3}\).Illion Numbers by Jonathan Bowers The term was coined by Jonathan Bowers. It is followed by 6,000,000,000,000,000,000 (6 quintillion) zeroes in long scale. It is 3,000,000,000,000,000,004 digits long.
Written out in decimal form attillion (in the short scale) is:
In long scale:
Attillion is also known as one milliamilliamilliamilliamilliamilliatillion according to Landon Curt Noll's The English name of a number.
Tamara coined hexonillion for this number.My illions - Large number stuff Retrieved 2021-08-14.
== Etymology ==
The name of this number is based on the suffix "-illion" and SI prefix "atto-".
== Approximations in other notations ==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{3000000000000000003}\) 	\(1\times10^{3000000000000000003}\)
Arrow notation 	\(10\uparrow3000000000000000003\), \(1000↑(10^{18}+1)\) 	\(10\uparrow3000000000000000003\), \(1000↑(10^{18}+1)\)
Down-arrow notation 	\(1000\downarrow\downarrow7\) 	\(381\downarrow\downarrow8\)
Chained arrow notation 	\(10\rightarrow3000000000000000003\), \(1000→(10→{18}+1)\)	\(10\rightarrow3000000000000000003\), \(1000→(10→{18}+1)\)
Steinhaus-Moser Notation 	14[3][3] 	15[3][3]
Copy notation 	2[2[19]] 	3[3[19]]
H* function 	H(H(5)) 	H(H(5))
Taro's multivariable Ackermann function	A(3,A(3,60)) 	A(3,A(3,61))
Pound-Star Notation 	#*((1))*(2)*24 	#*((1))*(1,2)*6
BEAF 	{10,3000000000000000003} 	{10,3000000000000000003}
Hyper-E notation 	E3000000000000000003 	E3000000000000000003
Bashicu matrix system 	(0)(1)[7] 	(0)(1)[8]
Hyperfactorial array notation 	(19!)! 	(20!)!
Fast-growing hierarchy 	\(f_2(f_2(57))\) 	\(f_2(f_2(58))\)
Hardy hierarchy 	\(H_{\omega^2\times 2}(57)\) 	\(H_{\omega^2\times 2}(58)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega+8}3+3}}(10)\) 	\(g_{\omega^{\omega^{\omega+8}3+3}}(10)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Jonathan Bowers
Category:Illion
Category:Class 3
Category:Powers of 10 with squarefree exponent
Category:Lower class 3
Category:Tier 2 -illion numbers
ja:Jonathan Bowersによって定義された巨大数#アッティリオン