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A045457
Primes congruent to {0, 4} mod 5.
2
5, 19, 29, 59, 79, 89, 109, 139, 149, 179, 199, 229, 239, 269, 349, 359, 379, 389, 409, 419, 439, 449, 479, 499, 509, 569, 599, 619, 659, 709, 719, 739, 769, 809, 829, 839, 859, 919, 929, 1009, 1019, 1039, 1049, 1069, 1109, 1129, 1229, 1249, 1259, 1279
OFFSET
1,1
COMMENTS
Being a subset of A141158, this is also a subset of the primes of form x^2 - 5*y^2. - Tito Piezas III, Dec 28 2008
Apparently primes p such that 5 | tau(p), where Ramanujan's tau is A000594. - Charles R Greathouse IV, Jul 08 2013
LINKS
MATHEMATICA
Select[Prime@Range[210], MemberQ[{0, 4}, Mod[ #, 5]] &] (* Ray Chandler, Nov 07 2006 *)
PROG
(Magma) [ p: p in PrimesUpTo(1300) | p mod 5 in {0, 4} ]; // Vincenzo Librandi, Aug 13 2012
(PARI) is(n)=n==5 || (n%5==4 && isprime(n)) \\ Charles R Greathouse IV, Jul 08 2013
CROSSREFS
Same as A030433 prefixed with 5.
Cf. A000040.
Sequence in context: A115167 A115103 A241043 * A165557 A138242 A163076
KEYWORD
nonn,easy
EXTENSIONS
Extended by Ray Chandler, Nov 07 2006
STATUS
approved