359

This number is a prime.

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Largest known prime partial sum of number of connected planar graphs with n edges: 1 + 1 + 1 + 3 + 5 + 12 + 30 + 79 + 227 = 359 is prime. [Post]

Submitted: 2010-04-17 15:14:09; Last Modified: 2010-04-19 00:56:11.