27611

This number is a prime.

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In 1990, Balog proved there are arbitrarily large sets of primes for which the means of each pair of entries is a distinct prime. For example,
{71, 1163, 1283, 2663, 4523, 5651, 9311, 13883, 13931, 14423, 25943, 27611}
Granville believes there may be sets like this of infinite length!

Submitted: 2008-05-18 18:26:01;   Last Modified: 2013-03-31 18:24:34.
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