Small dipentary prismatohecatonicositrishecatonicosachoron

The small dipentary prismatohecatonicositrishecatonicosachoron, or sidpiphithi, is a nonconvex uniform polychoron that consists of 120 great icosahedra, 720 pentagrammic prisms, 120 icosidodecadodecahedra, 120 small rhombicosidodecahedra, and 120 small dodecicosahedra. One great icosahedron, five pentagrammic prisms, five icosidodecadodecahedra, five small rhombicosidodecahedra, and five small dodecicosahedra join at each vertex.

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