Nicholas Rougeux designed a series of posters to visualize all 143 prime numbers with three digits based on simple rules.

Each print contains all 143 prime numbers with 3 digits. Each is represented by an image composed of simple geometric shapes based on its digital root and colors based on its digits. Arranging these images sequentially creates colorful collages of prime numbers based on simple rules.

For each poster, a unique shape was assigned to the digital root of each prime number which is calculated by iteratively summing its digits until one remains. (All known prime numbers greater than 3 have digital roots of 1, 2, 4, 5, 7, or 8.)

There are nine posters in all that use a few different styles of geometric shape.