Re: A big hole in the prime universe
- --- In firstname.lastname@example.org, "Robert" <robert_smith44@...> wrote:
>Should have thought more before I posted. All numbers of the stated
> Here is a fact:
> No number of the form 4*b^n+/-1 with b==14mod15 is prime.
> Does this mean that when b not 14mod15 there is an increased chance of
> primes and twins over normal probabilities or are such forms 4*x+/-1,
> with x in the form b^n just less prime. My gut feel tells me that the
> former is the case.
> Robert Smith
form are divisible by 3 or 5, so my gut feeling is correct, there is
an increased chance that 4*b^n+/-1; b not 14mod15; are prime. It is
just a partial sieve.