Attekillillion

The attekillillion is equal to \(10^{3\left(10^{18,000}\right)+3}\).Sbiis Saibian's large numbers site The term was coined by Sbiis Saibian.
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow18000)\) 	\(1000\uparrow(1+10\uparrow18000)\)
Down-arrow notation 	\(1000\downarrow\downarrow6001\) 	\(455\downarrow\downarrow6773\)
Steinhaus-Moser Notation 	5[3][3][3] 	6[3][3][3]
Copy notation 	2[2[18001]] 	3[3[18001]]
H* function 	H(H(5999)) 	H(H(5999))
Taro's multivariable Ackermann function	A(3,A(3,59795)) 	A(3,A(3,59796))
Pound-Star Notation 	#*((1))*((6794))*49 	#*((1))*((6795))*49
BEAF 	{1000,1+{10,18000}} 	{1000,1+{10,18000}}
Hyper-E notation 	E(3+3E18000) 	E(3+3E18000)
Bashicu matrix system 	(0)(1)[244] 	(0)(1)[245]
Hyperfactorial array notation 	((7!)!)! 	((8!)!)!
Fast-growing hierarchy 	\(f_2^3(12)\) 	\(f_2^3(13)\)
Hardy hierarchy 	\(H_{\omega^23}(12)\) 	\(H_{\omega^23}(13)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^4+\omega^38}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega^4+\omega^38}3+3}}(10)\)
== Sources ==
Category: Tier 3 -illion numbers
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Illion
Category:Class 3
Category:Upper class 3