Small disnub prismatosnub heptishexacosichoron

The small disnub prismatosnub heptishexacosichoron, or sudspeshax, is a nonconvex uniform polychoron that consists of 600 great icosahedra, 600 great dodecahedra, 4800 cuboctahedra (some of which lie in the same hyperplanes, forming 2400 compounds of two), 600 rhombidodecadodecahedra, 600 truncated icosahedra, 600 small dodecicosidodecahedra, 600 small ditrigonal dodecicosidodecahedra and 600 small icosicosidodecahedra (forming 600 compounds of one of each), and 3600 pentagrammic prisms.

One great icosahedron, one great dodecahedron, eight cuboctahedra (eight compounds), five rhombidodecadodecahedra, five truncated icosahedra, five small dodecicosidodecahedra, five small ditrigonal dodecicosidodecahedra and five small icosicosidodecahedra (ten compounds), and five pentagrammic prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary dishecatonicosihexacosidishecatonicosachora and 5 small dipentary prismatohexacositrishecatonicosachora.

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