Hexeicosillion

The hexeicosillion is equal to \(10^{3\times 10^{78}+3}\) or \(10^{3\text{ quinvigintillion }3}\).Jonathan Bowers' 4 Tiered -illion Series - Pointless Large Number Stuff It is defined using Sbiis Saibian's generalization of Jonathan Bowers' -illion system.
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow78)\) 	\(1000\uparrow(1+10\uparrow78)\)
Down-arrow notation 	\(1000\downarrow\downarrow27\) 	\(6\downarrow\downarrow102\)
Steinhaus-Moser Notation 	46[3][3] 	47[3][3]
Copy notation 	2[2[79]] 	3[3[79]]
H* function 	H(H(25)) 	H(H(25))
Taro's multivariable Ackermann function	A(3,A(3,259)) 	A(3,A(3,260))
Pound-Star Notation 	#*((1))*(5,4,5,1,8)*5 	#*((1))*(6,4,5,1,8)*5
BEAF 	{1000,1+{10,78}} 	{1000,1+{10,78}}
Hyper-E notation 	E(3+3E78) 	E(3+3E78)
Bashicu matrix system 	(0)(1)[16] 	(0)(1)[17]
Hyperfactorial array notation 	(56!)! 	(57!)!
Fast-growing hierarchy 	\(f_2(f_2(254))\) 	\(f_2(f_2(255))\)
Hardy hierarchy 	\(H_{\omega^22}(254)\) 	\(H_{\omega^22}(255)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega7+8}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega7+8}3+3}}(10)\)
== Sources ==
Category:Illion
Category:Class 3
Category:Numbers
Category:Greek-based name
Category:Middle class 3
Category:Tier 2 -illion numbers