Small sphenoidal heptachiliadiacosichoron

The small sphenoidal heptachiliadiacosichoron is a convex isochoric polychoron with 7200 sphenoids as cells. It can be obtained as the dual of the great rhombated hexacosichoron.

It can also be constructed as the convex hull of a hecatonicosachoron, a hexacosichoron, and a rectified hexacosichoron. If the hecatonicosachoron has edge length 1, the hexacosichoron has edge length $$\frac{5+3\sqrt5}{5} ≈ 2.34164$$ and the rectified hexacosichoron has edge length $$3\frac{19+13\sqrt5}{121} ≈ 1.19179$$.