login
A142789
Primes congruent to 19 mod 60.
2
19, 79, 139, 199, 379, 439, 499, 619, 739, 859, 919, 1039, 1279, 1399, 1459, 1579, 1699, 1759, 1879, 1999, 2179, 2239, 2539, 2659, 2719, 3019, 3079, 3259, 3319, 3499, 3559, 3739, 3919, 4099, 4159, 4219, 4339, 4519, 4639, 4759, 4999, 5059, 5119, 5179, 5419
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 16n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[800]], MemberQ[{19}, Mod[#, 60]] &] (* Vincenzo Librandi, Sep 04 2012 *)
Select[Range[19, 5500, 60], PrimeQ] (* Harvey P. Dale, Sep 17 2020 *)
PROG
(Magma) [p: p in PrimesUpTo(6000) | p mod 60 eq 19 ]; // Vincenzo Librandi, Sep 04 2012
(PARI) is(n)=isprime(n) && n%60==19 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A132234 A074822 A139871 * A158491 A201783 A139941
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved