Birectified dischiliahecatonhexaconta-myriaheptachiliadiacosioctaconta-zetton

The birectified dischiliahecatonhexaconta-myriaheptachiliadiacosioctaconta-zetton, or borfy, also called the birectified 421 polytope, is a convex uniform polyzetton. It has 240 rectified hecatonicosihexapentacosiheptacontahexaexa, 2160 birectified hecatonicosoctaexa, and 17280 birectified octaexa. 3 rectified hecatonicosihexapentacosiheptacontahexaexa, 10 birectified hecatonicosoctaexa, and 16 birectified octaexa join at each triangular-demipenteractic duoprismatic vertex. As the name suggests, it is the birectification of the dischiliahecatonhexaconta-myriaheptachiliadiacosioctaconta-zetton.