83

This number is a prime.

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Total number of vertices in all finite 6-dimensional regular polytopes (7 in the 6-simplex, 64 in the 6-hypercube, 12 in the 6-hyperoctahedron). [Post]

Submitted: 2008-07-15 18:02:34; Last Modified: 2008-07-17 17:25:46.