7

This number is a prime.

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Is 7 the only prime area for an n-gon plotted (n, prime(n))? Start (1,2), (2,3), ... ,(8,19) and connect (1,2) to (8,19). [Bergot]

Submitted: 2018-04-22 23:52:34; Last Modified: 2018-07-16 18:05:45.