The Professor Cube is a 5x5x5 Rubik's Cube variant. It has many similarities to the Rubik's Revenge, but is fundamentally different due to having odd-numbered dimensions. Like the standard Rubik's Cube, the centers maintain their location no matter how you turn it.
The world record fastest 5×5×5 solve is 37.28 seconds, set by Max Park of the United States at 'SacCubing IV 2018'. The world record for average of five solves (excluding fastest and slowest) is 43.21 seconds, set by Feliks Zemdegs of Australia at the 'Melbourne Cube Days 2017' competition. The record for solving a 5×5×5 cube blindfolded is 3 minutes, 46.56 seconds (including inspection), set by Kaijun Lin (林恺俊) of China on 24 February 2018 at Singapore Championship 2018.