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A142617 Primes congruent to 23 mod 55. 2
23, 353, 463, 683, 1013, 1123, 1453, 1783, 2003, 2113, 2333, 2663, 3323, 3433, 4093, 4423, 4643, 4973, 5303, 5413, 5743, 6073, 6733, 7283, 7393, 7723, 8053, 8273, 8713, 8933, 9043, 9923, 10253, 11243, 11353, 11903, 12343, 12893, 13003, 13553, 13883, 14323 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

FORMULA

a(n) ~ 40n log n. - Charles R Greathouse IV, Jul 03 2016

MATHEMATICA

Select[Range[23, 15000, 55], PrimeQ] (* Harvey P. Dale, Apr 22 2012 *)

Select[Prime[Range[2500]], MemberQ[{23}, Mod[#, 55]] &] (* Vincenzo Librandi, Aug 31 2012 *)

PROG

(Magma) [p: p in PrimesUpTo(16000) | p mod 55 eq 23]; // Vincenzo Librandi, Aug 31 2012

(PARI) is(n)=isprime(n) && n%55==23 \\ Charles R Greathouse IV, Jul 03 2016

CROSSREFS

Cf. A000040.

Sequence in context: A022469 A028030 A022454 * A025949 A025969 A020579

Adjacent sequences:  A142614 A142615 A142616 * A142618 A142619 A142620

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified September 24 18:11 EDT 2022. Contains 356949 sequences. (Running on oeis4.)