# [seqfan] Re: 2^prime(n) - prime(n^2)

Charles Greathouse charles.greathouse at case.edu
Thu Oct 17 08:30:08 CEST 2013

```I found no additional terms up to n = 20000, so if another such prime
exists it has at least 67,655 decimal digits.

Charles Greathouse
Analyst/Programmer
Case Western Reserve University

On Thu, Oct 10, 2013 at 9:25 PM, Neil Sloane <njasloane at gmail.com> wrote:

> Only three terms, but plenty of digits in them - so please enter
> it into the OEIS, someone!
> Neil
>
>
> On Thu, Oct 10, 2013 at 7:47 PM, Charles Greathouse <
> charles.greathouse at case.edu> wrote:
>
> > I agree with Harvey's terms. If there are any others they have more than
> > 3000 decimal digits.
> >
> > Charles Greathouse
> > Analyst/Programmer
> > Case Western Reserve University
> >
> >
> > On Thu, Oct 10, 2013 at 5:30 PM, Harvey P. Dale <hpd at hpdale.org> wrote:
> >
> > >         I get different terms: 2, 1951, 147573952589676410491.
> > >         Best,
> > >         Harvey
> > >
> > >
> > > -----Original Message-----
> > > From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of ????
> > > ?????????
> > > Sent: Thursday, October 10, 2013 1:01 PM
> > > To: seqfan at list.seqfan.eu
> > > Subject: [seqfan] 2^prime(n) - prime(n^2)
> > >
> > >
> > > Hello, SeqFans,
> > >
> > > Primes of form 2^prime(n) - prime(n^2):
> > >
> > > 2, 129193,... What in the next one?
> > >
> > > Best regards,
> > >
> > > JSG
> > >
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> >
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> >
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> >
>
>
>
> --
> Dear Friends, I have now retired from AT&T. New coordinates:
>
> Neil J. A. Sloane, President, OEIS Foundation
> 11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
> Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ.