Great ditrigonary hecatonicositrishecatonicosihexacosichoron

The great ditrigonary hecatonicositrishecatonicosihexacosichoron, or gidthithix, is a nonconvex uniform polychoron that consists of 600 octahedra, 120 icosidodecahedra, 120 rhombidodecadodecahedra, 120 small icosicosidodecahedra, and 120 great dodecicosahedra. Three octahedra, three icosidodecahedra, six rhombidodecadodecahedra, six small icosicosidodecahedra, and six great dodecicosahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the rectified small ditrigonary hexacosihecatonicosachoron.