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A141887 Primes congruent to 19 mod 20. 6
19, 59, 79, 139, 179, 199, 239, 359, 379, 419, 439, 479, 499, 599, 619, 659, 719, 739, 839, 859, 919, 1019, 1039, 1259, 1279, 1319, 1399, 1439, 1459, 1499, 1559, 1579, 1619, 1699, 1759, 1879, 1979, 1999, 2039, 2099, 2179, 2239, 2339, 2399, 2459, 2539, 2579, 2659 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Range[19, 5000, 20], PrimeQ[#]&] (* Vladimir Joseph Stephan Orlovsky, Mar 31 2011*)

PROG

(MAGMA) [p: p in PrimesUpTo(3000) | p mod 20 eq 19 ]; // Vincenzo Librandi, Aug 16 2012

(PARI) is(n)=isprime(n) && n%20==19 \\ Charles R Greathouse IV, Jul 01 2016

CROSSREFS

Cf. A000040, A105854, A141881, A141882, A141883.

Sequence in context: A041704 A041706 A042619 * A141773 A250024 A031375

Adjacent sequences:  A141884 A141885 A141886 * A141888 A141889 A141890

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified July 15 00:36 EDT 2020. Contains 335762 sequences. (Running on oeis4.)