Small disnub prismatodisnub pentishexacosichoron

The small disnub prismatodisnub pentishexacosichoron, or sadspid sopex, is a nonconvex uniform polychoron that consists of 600 great icosahedra and 600 small stellated dodecahedra (some of which lie in the same hyperplanes, forming 600 compounds of one of each of them), 600 icosahedra, 4800 cuboctahedra (forming 2400 compounds of two), 600 rhombidodecadodecahedra, 600 small dodecicosidodecahedra, and 6000 triangular prisms.

One great icosahedron and one small stellated dodecahedron (one compound), one icosahedron, eight cuboctahedra (six compounds), five rhombidodecadodecahedra, five small dodecicosidodecahedra, and five triangular prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary prismatohexacosihecatonicosachora and 5 small dipentary hexacositetrishecatonicosachora.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small diretrosnub disnub decahecatonicosadishexacosichoron.