Small dipentary prismatodishexacosidishecatonicosachoron

The small dipentary prismatodishexacosidishecatonicosachoron, or sidpip dixady, is a nonconvex uniform polychoron that consists of 120 great icosahedra, 120 icosahedra, 1200 triangular prisms, 600 truncated tetrahedra, and 600 cubohemioctahedra. One great icosahedron, one icosahedron, five triangular prisms, five truncated tetrahedra, and five cubohemioctahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the prismatodishecatonicosachoron.