[seqfan] Re: Consecutive Sophie Germain primes with the same gap

[Harvey P. Dale]

	There is no set of six consecutive SG primes up to the 50 millionth prime.
	Best,
	Harvey
 

-----Original Message-----
From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Neil Fernandez
Sent: Friday, September 16, 2016 1:11 PM
To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
Subject: [seqfan] Re: Consecutive Sophie Germain primes with the same gap

Hi,

In message <CABxCbJ2TuYVFP43EWg1w_VVx2K9UO=bijnmUDtBSO0caF+-BYw at mail.gma
il.com>, M. F. Hasler <oeis at hasler.fr> writes

>Zak,
>I edited oeis.org/A074259 (gaps between SG primes) and added your 
>observation in a comment.
>Best,
>M.
>
>On Fri, Sep 16, 2016 at 4:25 AM, Zak Seidov via SeqFan < 
>seqfan at list.seqfan.eu> wrote:
>
>> The first four SG primes with the same gap:
>>
>> A005384(4096..4099) = { 467471, 467531, 467591, 467651} with gap=60.

That is the second set. The first four are

A005384(85..88) = {3299, 3329, 3359, 3389} with gap 30.

>> Are there five {or more) consecutive SG primes with the same gap?

Yes. The first set with five is

A005384(29952..29956) = {4866623, 4866773, 4866923, 4867073, 4867223} with gap 150.

Neil

--
Neil Fernandez

--
Seqfan Mailing list - http://list.seqfan.eu/