|
|
A053362
|
|
Numbers k such that 291*2^k + 1 is prime.
|
|
1
|
|
|
4, 12, 16, 20, 24, 39, 40, 65, 77, 95, 240, 256, 303, 376, 416, 596, 760, 1037, 1045, 1553, 2452, 2559, 2596, 2607, 4616, 5703, 8620, 8799, 10180, 12756, 13124, 16620, 17312, 29489, 33576, 51149, 74832, 77560, 106863, 154544, 178223, 319157, 368876, 429460
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MATHEMATICA
|
Select[Range[5*10^3], PrimeQ[291*2^# + 1] &] (* G. C. Greubel, May 25 2018 *)
|
|
PROG
|
(Magma) [n: n in [1..3000] | IsPrime(291*2^n+1)]; // G. C. Greubel, May 25 2018
|
|
CROSSREFS
|
|
|
KEYWORD
|
hard,nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
a(40)-a(49) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 22 2018
Terms moved from Data to b-file, and one term added to b-file, by Jeppe Stig Nielsen, Feb 25 2020
|
|
STATUS
|
approved
|
|
|
|