OFFSET
1,2
COMMENTS
With a(37) = 1130884 the list is complete up to 2.1*10^6, but k = 2345001, 3176269 and 3570132 are also in the sequence, cf. Ballinger & Keller link. - M. F. Hasler, Jul 20 2019
The mentioned limit up to which the list is complete, has reached about 3.7*10^6 (PrimeGrid). - Jeppe Stig Nielsen, Sep 19 2019
LINKS
Ray Ballinger, Proth Search Page
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300. (Created April 1998, updated July 2019.)
Chris K. Caldwell, The Prime Database: 33*2^3649810+1.
M. B. Porter et al, Factors of 33*2^n+1, OEIS wiki, updated July 2019
PrimeGrid, Fermat Divisor Search range statistics.
PROG
(PARI) is(n)=ispseudoprime(33*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
EXTENSIONS
Added more terms from the Ballinger & Keller page. - Joerg Arndt, Apr 07 2013
Added & edited links & cross-references. - M. F. Hasler, Jul 20 2019
a(38)-a(41) from Jeppe Stig Nielsen, Sep 18 2019
STATUS
approved