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 17:44:19; Last Modified: 2016-07-19 18:25:09.
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