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From: ron@ada-uts.UUCP
Newsgroups: net.math
Subject: Re: Another Prime Number Question With N
Message-ID: <16100002@ada-uts.UUCP>
Date: Tue, 14-May-85 16:41:00 EDT
Article-I.D.: ada-uts.16100002
Posted: Tue May 14 16:41:00 1985
Date-Received: Sat, 18-May-85 23:45:42 EDT
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Nf-From: ada-uts!ron    May 14 16:41:00 1985


"The set of all primes p such that 10p + r  (r = 1,3,7,9) is also in the
set for some r."

This definition doesn't make any sense at all.  I also don't see an
obvious way to turn it into a description of the set in question.