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- From: petry@frobenius.math.washington.edu (David Petry)
- Newsgroups: sci.math
- Subject: Re: Prime quadruplet records?
- Message-ID: <1992Jul28.181225.19984@u.washington.edu>
- Date: 28 Jul 92 18:12:25 GMT
- References: <AeRJFQW00WBNI1kVwn@andrew.cmu.edu> <1992Jul28.151305.8747@linus.mitre.org>
- Sender: news@u.washington.edu (USENET News System)
- Organization: University of Washington, Mathematics, Seattle
- Lines: 23
-
- In article <1992Jul28.151305.8747@linus.mitre.org> bs@gauss.mitre.org (Robert D. Silverman) writes:
- >In article <AeRJFQW00WBNI1kVwn@andrew.cmu.edu> ow0a+@andrew.cmu.edu (Oswald Wyler) writes:
- >:A quadruplet of primes occurs when four out of five consecutive odd numbers
- >:are prime. Except for the first two quadruplets, 3,5,7,11 and 5,7,11,13,
- >:all quadruplets of primes are of the form 30n + 11, 30n + 13, 30n + 17,
- >:30n + 19. It is well known that there are only finitely many prime
- >:quadruplets.
- >
- >Where did you get your information?
- >
- >It is NOT well known that there are only finitely many because almost
- >certainly there are infinitely many. This is based upon the prime k-tuples
- >conjecture (which in turn is a special case of Schinzel's conj. which in turn
- >is a special case of the Bateman-Horn conj.)
- >
- >Heuristically, up to N, one should expect about 1/phi(30) N/(log N)^4 such
- >quadruplets.
-
- Just for the record, there are 4768 prime quadruplets less than 10^8. The
- largest starts with 99982241.
-
-
- David Petry
-