A Rubik’s Cube has 3 pieces wide, so it is called 3×3 Rubik’s Cube. The Rubik’s Cube record is only 5.55 seconds. There are other well-known cubes with more pieces per side as 4×4 and 5×5 cubes. The number of parts and the number of moves needed to solve them increase, also increasing the number of seconds required to solve them (22 and 48 seconds, respectively).

A few years ago they managed to create the first 6×6 and 7×7 Rubik’s cubes. And some time later they became official categories in Rubik’s Cube competitions. Their records are 1:40 and 2:38, respectively.

All these cubes are small, even tiny, compared with 17×17 Rubik’s Cube, the most complicated Rubik’s cube in the world. With 1734 stickers, it is not easy to solve. However, Kenneth Brandon has been able to solve it in 7 and a half hours!!

https://www.youtube.com/watch?v=qlnUEknwdcI

You can watch the full video (nearly eight hours duration).