Pentahectillion

Pentahectillion is equal to \(10^{3\times 10^{1,500}+3}\).Sbiis Saibian's large numbers site The term was coined by Sbiis Saibian.
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow1500)\) 	\(1000\uparrow(1+10\uparrow1500)\)
Down-arrow notation 	\(1000\downarrow\downarrow501\) 	\(142\downarrow\downarrow698\)
Steinhaus-Moser Notation 	546[3][3] 	547[3][3]
Copy notation 	2[2[1501]] 	3[3[1501]]
H* function 	H(H(499)) 	H(H(499))
Taro's multivariable Ackermann function	A(3,A(3,4983)) 	A(3,A(3,4984))
Pound-Star Notation 	#*((1))*((3))*17 	#*((1))*((4))*17
BEAF 	{1000,1+{10,1500}} 	{1000,1+{10,1500}}
Hyper-E notation 	E(3+3E1500) 	E(3+3E1500)
Bashicu matrix system 	(0)(1)[70] 	(0)(1)[71]
Hyperfactorial array notation 	(631!)! 	(632!)!
Fast-growing hierarchy 	\(f_2(f_2(4973))\) 	\(f_2(f_2(4974))\)
Hardy hierarchy 	\(H_{\omega^22}(4973)\) 	\(H_{\omega^22}(4974)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^3+\omega^25}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega^3+\omega^25}3+3}}(10)\)
==Sources==
Category: Tier 2 -illion numbers
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Class 3
Category:Illion
Category:Upper class 3