Re: (n+1)^p-n^p for the difficult case n=137
- --- In firstname.lastname@example.org, "j_chrtn" <j_chrtn@...> wrote:
>Sterling work, Jean-Louis!
> Hi group,
> 138^196873-137^196873 is PRP for bases 2, 3, 5, 7, 11, 13, 17, 19, 31, 71 and 101.
> This number has 421285 digits.
> Moreover, 138^p-137^p is composite for all primes p < 196873 !
> This later result should however better be double checked, since it took me more than 2 years to check all p <= 196873; and I can't be absolutely sure I made no mistake during this long period.
> Any volunteer for the double check task ? ;-)
(David should like this:-)