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 A132235 Primes congruent to 23 (mod 30). 12
 23, 53, 83, 113, 173, 233, 263, 293, 353, 383, 443, 503, 563, 593, 653, 683, 743, 773, 863, 953, 983, 1013, 1103, 1163, 1193, 1223, 1283, 1373, 1433, 1493, 1523, 1553, 1583, 1613, 1733, 1823, 1913, 1973, 2003, 2063, 2153, 2213, 2243, 2273, 2333, 2393 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Primes (excluding 3) ending in 3 with (SOD-1)/3 non-integer where SOD is sum of digits. - Ki Punches The sequence is infinite by Dirichlet's theorem. - Arkadiusz Wesolowski, Apr 02 2014 Terms are non-twin primes A007510. - Omar E. Pol, Jul 25 2019 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 C. K. Caldwell, The Prime Pages. Omar E. Pol, Prime numbers in a sieve with 30 columns FORMULA a(n) = A158791(n)*30 + 23. - Chandler Intersection of A030431 and A007528. - Chandler MATHEMATICA Select[Prime[Range[1000]], MemberQ[{23}, Mod[#, 30]]&] (* Vincenzo Librandi, Aug 14 2012 *) PROG (MAGMA) [p: p in PrimesUpTo(3000) | p mod 30 eq 23 ]; // Vincenzo Librandi, Aug 14 2012 (PARI) is(n)=isprime(n) && n%30==23 \\ Charles R Greathouse IV, Jul 01 2016 CROSSREFS Cf. A000040, A039949, A132230-A132236. Sequence in context: A055782 A104802 A128473 * A277993 A051650 A049438 Adjacent sequences:  A132232 A132233 A132234 * A132236 A132237 A132238 KEYWORD nonn,easy AUTHOR Omar E. Pol, Aug 15 2007 EXTENSIONS Extended by Ray Chandler, Apr 07 2009 STATUS approved

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Last modified October 17 21:16 EDT 2019. Contains 328132 sequences. (Running on oeis4.)