[seqfan] Re: both p -/+ 2 is prime power
njasloane at gmail.com
Mon Oct 19 20:00:44 CEST 2015
The wikipedia is wrong. 1 = 7^0 IS a prime power. We have had this
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.
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com
On Sat, Oct 17, 2015 at 6:33 PM, Martin Møller Skarbiniks Pedersen <
traxplayer at gmail.com> wrote:
> On 17 October 2015 at 07:45, юрий герасимов <2stepan at rambler.ru> wrote:
> > Dear SeqFans,
> > Primes p such that both p - 2 and p + 2 is prime power: 3, 5, 7, 11, 29,
> > 241, 59051, .... What in the next ( > 5*10^8 ) one ?
> > Best regards. JSG
> Why 3 ? 3-2=1 is not a prime power accordring to the wikipedia prime power
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