Quasidisprismatohexacosihecatonicosachoron

The quasidisprismatohexacosihecatonicosachoron, or quidpixhi, is a nonconvex uniform polychoron that consists of 600 regular tetrahedra, 120 great stellated dodecahedr, 1200 triangular prisms, and 720 pentagrammic prisms. 1 tetrahedron, 1 great stellated dodecahedron, 3 triangular prisms, and 3 pentagrammic prisms join at each vertex. It is the result of pushing the cells of either a great grand stellated hecatonicosachoron or a grand hexacosichoron inwards.