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A142324
Primes congruent to 23 mod 45.
3
23, 113, 293, 383, 563, 653, 743, 1013, 1103, 1193, 1283, 1373, 1553, 1733, 1823, 1913, 2003, 2273, 2543, 2633, 2903, 3083, 3533, 3623, 3803, 4073, 4253, 4523, 4703, 4793, 4973, 5153, 5333, 5693, 5783, 6053, 6143, 6323, 6863, 7043, 7583, 7673, 7853, 8123
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 24n log n. - Charles R Greathouse IV, Jul 02 2016
MATHEMATICA
Select[Range[23, 30000, 90], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Jul 14 2011 *)
Select[Prime[Range[1200]], MemberQ[{23}, Mod[#, 45]] &] (* Vincenzo Librandi, Aug 26 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(10000) | p mod 45 eq 23]; // Vincenzo Librandi, Aug 26 2012
(PARI) is(n)=isprime(n) && n%45==23 \\ Charles R Greathouse IV, Jul 02 2016
CROSSREFS
Sequence in context: A071634 A234252 A101804 * A337425 A233362 A288751
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved