 Great grand stellated 120-cell

In geometry, the great grand stellated 120-cell or great grand stellated polydodecahedron is a regular star 4-polytope with Schläfli symbol {5/2,3,3}, one of 10 regular Schläfli-Hess 4-polytopes.It is unique among the 10 for having 600 vertices, and has the same vertex arrangement as the regular convex 120-cell.