The Rubik’s ‘Professor’s Cube’ is the 5x5x5 version of the famous Rubik’s Cube. The Rubik’s 5x5 is not for the feint hearted and is the most complex of all the Rubik’s Cubes. However, knowledge of how to solve the 3x3x3 Cube and the 4x4x4 Cube will help you a lot. The full number of permutations for the 5x5x5 cube has been calculated at 282 870 942 277 741 856 536 180 333 107 150 328 293 127 731 985 672 134 721 536 000 000 000 000 000. Which is about 283 duodecillion on the long scale or 283 trevigintillion on the short scale - (no - we had never heard of a these “illions” either!!) Be sure the rows are correctly aligned before turning the Cube and never use excessive force. There are other ways to crack this puzzle! Please note that a solving hints booklet is not included in the 5x5x5 package. But don’t worry. If you get stuck or need some help, click here to go to our “Rubik’s Solving Centre” page for some solving guides and videos.