Subtract one and it's a prime number, so you can say there are prime number of unsolved states. This is only true for some cubes of different sizes [1]. [1]: h

Subtract one and it's a prime number, so you can say there are prime number of unsolved states. This is only true for some cubes of different sizes [1]. [1]: https://www.speedsolving.com/forum/threads/a-collection-of-cubing-curiosities.31714/#post-630928 https://www.speedsolving.com/forum/threads/a-collection-of-c...