Talk:Ulam spiral

If we connect all the points, representing primes when n runs to infinity, we might get a two-dimensional fractal in a square.

This is speculation with no evidence, so it wouldn't belong in an encyclopedia article summarizing what is currently known. Also, it isn't clear what this would mean anyway. As n grows, the sequence of images (all scaled to the same size) doesn't even converge, so it isn't clear what would be meant by the sequence being a "fractal".