Lexexfa

Lexexfa is in Joyce's factorial series formed with a verbalized -x- and the -fa suffix, \(70! = g(1, g(69, 0, -1, 70), 70)\) in the Ackermann's Generalized Exponential Notation.Mathematics Beyond the Googol It is the smallest factorial number larger than googol, it can be a good upper bound for a googol. It has 101 digits and its decimal representation is:
== Approximations ==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1.197\times10^{100}\) 	\(1.198\times10^{100}\)
Arrow notation 	\(66\uparrow55\) 	\(57\uparrow\uparrow2\)
Steinhaus-Moser Notation 	56[3] 	57[3]
Copy notation 	1[101] 	2[101]
Chained arrow notation 	\(66→55\) 	\(57→2→2\)
Taro's multivariable Ackermann function	A(3,329) 	A(3,330)
Pound-Star Notation 	#*(13,5,8,2,3,7,1)*9 	#*(2,7,12,1,2,4)*11
BEAF 	{66,55} 	{57,2,2}
Hyper-E notation 	E2#2 	2E2#2
Bashicu matrix system 	(0)(0)(0)(0)(0)[1341] 	(0)(0)(0)(0)(0)[1342]
Bird's array notation 	{66,55} 	{57,2,2}
Hyperfactorial array notation 	70! 	70!
Strong array notation 	s(66,55) 	s(57,2,2)
Fast-growing hierarchy 	\(f_2(324)\) 	\(f_2(325)\)
Hardy hierarchy 	\(H_{\omega^2}(324)\) 	\(H_{\omega^2}(325)\)
Slow-growing hierarchy 	\(g_{\omega^{53}21}(73)\)	\(g_{\omega^{52}49}(78)\)
== Sources ==
==See also==
Category:Numbers
Category:Orders of symmetric groups
Category:Numbers by André Joyce
Category:Class 2
Category:Numbers with 101 to 999 digits
Category:Roman numeral-based name
Category:Factorial numbers