Math Art: Cube Towers
This is “Prime Divisor Cube Towers on Ulam Spiral”, by Berhard Rietzl, on display at the 2012 Bridges Math and Art Conference at Towson University.
This is an artistic representation of the numbers 1 through 144. Each color represents a different prime divisor, and so each stack represents the prime factorization of the given number.
You can read more about this piece here.