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A142177
Primes congruent to 31 mod 39.
1
31, 109, 421, 499, 577, 733, 811, 967, 1123, 1201, 1279, 1669, 1747, 2137, 2293, 2371, 2683, 2917, 3229, 3307, 3463, 3541, 3697, 3853, 3931, 4243, 4789, 5023, 5101, 5179, 5413, 5569, 5647, 5881, 6037, 6271, 6427, 6661, 7129, 7207, 7753, 8221, 8377, 8689
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 24n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[3000]], MemberQ[{31}, Mod[#, 39]]&] (* Vincenzo Librandi, Aug 20 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(10000) | p mod 39 eq 31 ]; // Vincenzo Librandi, Aug 20 2012
(PARI) is(n)=isprime(n) && n%39==31 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A141877 A057230 A225397 * A281194 A063397 A044282
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved