821

This number is a prime.

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The smallest prime in the largest 3-digit prime quadruplet, {821, 823, 827, 829}, whose sums of digits are the terms of the only double-digit quadruplet, {11, 13, 17, 19}. [Loungrides]

Submitted: 2016-07-19 12:44:19;   Last Modified: 2016-07-19 13:25:09.
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