Order-5 tesseractic tetracomb

The order-5 tesseractic tetracomb, or pitest, is a compact regular tiling of 4D hyperbolic space. 5 tesseracts meet at each face, and 600 meet at each vertex, forming a hexacosichoron as the vertex figure.

This polychoron can be alternated into a hexadecachoric-hexacosichoric tetracomb, which is uniform.