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# 821

This number is a prime.

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Smallest multidigit prime partial sum of number of planar
graphs with minimum degree at least 1 and n nodes. Also
largest known prime of its form: 0 + 1 + 2 + 7 + 22 + 109 +
680 = 821 is prime. [Post]
Submitted: 2010-03-23 17:55:14; Last Modified: 2010-03-23 20:36:48.

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