The 17 by 17 Cube

This puzzle solves very similarly to other high order cubes, and they all share the same method (mainly). They use the reduction method! Basically, first, you want to group all of the centers together, and then you solve the edges. After that, the puzzle solves just like a 3 by 3. There is a more in depth tutorial in the link below.

17 by 17 Solution