Great tritrigonary prismatohecatonicosidishexacosichoron

The great tritrigonary prismatohecatonicosidishexacosichoron, or getit phiddix, is a nonconvex uniform polychoron that consists of 600 regular tetrahedra, 720 pentagonal prisms, 600 cuboctahedra, and 120 great ditrigonary icosidodecahedra. 1 tetrahedron, 3 pentagonal prisms, 3 cuboctahedra, and 1 great ditrigonary icosidodecahedron join at each vertex.

It can be constructed from the grand ditetrahedronary hexacosihecatonicosachoron by expanding its great ditrigonary icosidodecahedral cells outward.

It is in the same regiment as the great tritrigonary hexacositrishecatonicosachoron.