Small rhombiprismic hexacosihecatonicosachoron

The small rhombiprismic hexacosihecatonicosachoron, or sirpaxhi, is a nonconvex uniform polychoron that consists of 600 cubohemioctahedra, 120 great rhombicosidodecahedra, and 720 decagonal prisms. One cubohemioctahedron, two great rhombicosidodecahedra, and two decagonal prisms join at each vertex.

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