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A142561
Primes congruent to 31 mod 53.
4
31, 137, 349, 773, 1091, 1303, 1409, 1621, 2999, 3529, 3847, 4271, 4483, 4801, 5119, 5437, 5861, 6073, 6709, 7027, 7451, 8087, 9041, 9677, 10313, 10631, 10949, 11161, 11903, 12433, 12539, 14341, 14447, 15083, 15401, 16249, 16567, 16673, 17203, 17627, 17839
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 52n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[2600]], MemberQ[{31}, Mod[#, 53]] &] (* Vincenzo Librandi, Aug 30 2012 *)
Select[Range[31, 18000, 53], PrimeQ] (* Harvey P. Dale, Sep 03 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(20000) | p mod 53 eq 31]; // Vincenzo Librandi, Aug 30 2012
(PARI) is(n)=isprime(n) && n%53==31 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A167388 A250462 A123236 * A165568 A141950 A201960
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved