[seqfan] Re: 2^k - prime(p) or prime(p) - 2^k ?

Charles Greathouse charles.greathouse at case.edu
Wed Apr 10 15:14:25 CEST 2013


> Hello, SegFans, Primes p of the form 2^k - prime(p) for some k:  3, 5,
503,...?

How would you prove the absence of a term? And what about 11 = 16 - 5, 13 =
16 - 3, 19 = 128 - 109, 23 = 64 - 41, 29 = 32 - 3, and so forth?

Charles Greathouse
Analyst/Programmer
Case Western Reserve University


On Tue, Apr 9, 2013 at 5:21 AM, юрий герасимов <2stepan at rambler.ru> wrote:

>
> Hello, SegFans, Primes p of the form 2^k - prime(p) for some k:  3, 5,
> 503,...? or Primes p of the form prime(p) - 2^k for some  k:  2, 3,...?
> Best regards, JSG.
>
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