Xonekillillion

The xonekillillion is equal to \(10^{3\left(10^{27,000}\right)+3}\).Sbiis Saibian's large numbers site The term was coined by Sbiis Saibian.
YouTuber Metsuka The Cute Princess 2007 calls this number rontekillillion for this number.Metsuka The Cute Princess 2007, Absolutely Ultimate​ List of Large Numbers (Part 4) | Completing Tier-3 illion Numbers Accessed 2024-05-12.
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow27000)\) 	\(1000\uparrow(1+10\uparrow27000)\)
Down-arrow notation 	\(1000\downarrow\downarrow9001\) 	\(159\downarrow\downarrow12266\)
Steinhaus-Moser Notation 	5[3][3][3] 	6[3][3][3]
Copy notation 	2[2[27001]] 	3[3[27001]]
H* function 	H(H(8999)) 	H(H(8999))
Taro's multivariable Ackermann function	A(3,A(3,89692)) 	A(3,A(3,89693))
Pound-Star Notation 	#*((1))*((1524))*59 	#*((1))*((1525))*59
BEAF 	{1000,1+{10,27000}} 	{1000,1+{10,27000}}
Hyper-E notation 	E(3+3E27000) 	E(3+3E27000)
Bashicu matrix system 	(0)(1)[299] 	(0)(1)[300]
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 	\(g_{\omega^{\omega^{\omega^42+\omega^37}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega^42+\omega^37}3+3}}(10)\)
==Sources==
Category: Tier 3 -illion numbers
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Illion
Category:Class 3
Category:Upper class 3