Number of combinations in Rubik's Revenge

There are 7,401,196,841,564,901,869,874,093,974,498,574,336,000,000,000 combinations in the , a logical successor to the .Number Of Combinations - The Rubik Zone The 4×4×4 Rubik's cube has exactly 171,118,012,606,138,569,596,625,000 times more combinations than the 3×3×3.
== Approximations ==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(7.401\times10^{45}\) 	\(7.402\times10^{45}\)
Arrow notation 	\(15\uparrow39\) 	\(50\uparrow27\)
Steinhaus-Moser Notation 	30[3] 	31[3]
Copy notation 	6[46] 	7[46]
Taro's multivariable Ackermann function	A(3,149) 	A(3,150)
Pound-Star Notation 	#*(2,1,4,2,2)*7 	#*(2,3,5)*13
BEAF 	{15,39} 	{50,27}
Hyper-E notation 	7E45 	8E45
Bashicu matrix system 	(0)(0)(0)(0)[735] 	(0)(0)(0)(0)[736]
Hyperfactorial array notation 	38! 	39!
Fast-growing hierarchy 	\(f_2(145)\) 	\(f_2(146)\)
Hardy hierarchy 	\(H_{\omega^2}(145)\) 	\(H_{\omega^2}(146)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega4+5}7+\omega^{\omega4+4}4}(10)\)	\(g_{\omega^{\omega^2+5}+\omega^{\omega^2+4}5}(7)\)
== Sources ==
Category:Numbers
Category:Class 2
Category:Numbers in group theory
Category:Numbers with 30 to 100 digits