OFFSET
1,2
COMMENTS
The subsequence of prime values starts 3, 11, 19, 113, 163, 419, 1511, 3623, 4519, 55711, 548291, ... - Muniru A Asiru, Apr 28 2019
LINKS
Jeppe Stig Nielsen, Table of n, a(n) for n = 1..44
Ray Ballinger, Proth Search Page
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300
Wilfrid Keller, List of primes k.2^n - 1 for k < 300
MAPLE
select(k->isprime(179*2^k+1), [$0..1000]); # Muniru A Asiru, Dec 18 2018
MATHEMATICA
Select[Range[1000], PrimeQ[179*2^# + 1] & ] (* Robert Price, Dec 18 2018 *)
PROG
(PARI) is(n)=ispseudoprime(179*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
(Magma) [n: n in [1..5000] |IsPrime(179*2^n+1)]; // Vincenzo Librandi, Dec 19 2018
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
EXTENSIONS
a(33)-a(43) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 18 2018
Term moved from Data section to b-file, and new term added to b-file, by Jeppe Stig Nielsen, Apr 04 2020
STATUS
approved