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A141966 Primes congruent to 3 mod 28. 1
3, 31, 59, 199, 227, 283, 311, 367, 479, 563, 619, 647, 787, 983, 1039, 1123, 1151, 1291, 1319, 1459, 1487, 1543, 1571, 1627, 1823, 1879, 1907, 2131, 2243, 2383, 2411, 2467, 2551, 2579, 2663, 2719, 2803, 2887, 2971, 2999, 3083, 3167, 3251, 3307, 3391, 3559 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 12n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[500]], MemberQ[{3}, Mod[#, 28]] &] (* Vincenzo Librandi, Aug 16 2012 *)
Select[Range[3, 4000, 28], PrimeQ] (* Harvey P. Dale, Jul 07 2016 *)
PROG
(Magma) [p: p in PrimesUpTo(5000) | p mod 28 eq 3 ]; // Vincenzo Librandi, Aug 16 2012
(PARI) is(n)=isprime(n) && n%28==3 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A290401 A341928 A238663 * A050833 A041207 A133203
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved

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Last modified June 13 05:35 EDT 2024. Contains 373366 sequences. (Running on oeis4.)