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A141970 Primes congruent to 13 mod 28. 1
13, 41, 97, 181, 293, 349, 433, 461, 601, 769, 797, 853, 881, 937, 1021, 1049, 1217, 1301, 1553, 1609, 1637, 1693, 1721, 1777, 1861, 1889, 1973, 2029, 2113, 2141, 2281, 2309, 2393, 2477, 2617, 2729, 2897, 2953, 3037, 3121, 3373, 3457, 3541, 3709, 3793, 3821 (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[1500]], MemberQ[{13}, Mod[#, 28]]&] (* Vincenzo Librandi, Aug 17 2012 *)
Select[Range[13, 4000, 28], PrimeQ] (* Harvey P. Dale, May 08 2015 *)
PROG
(Magma) [p: p in PrimesUpTo(5000) | p mod 28 eq 13 ]; // Vincenzo Librandi, Aug 17 2012
(PARI) is(n)=isprime(n) && n%28==13 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A026918 A123972 A167585 * A305155 A355965 A231885
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)