OFFSET
1,1
COMMENTS
Also, primes with digital root 1 and last digit 3. - J. W. Helkenberg, Oct 27 2011
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[1200]], MemberQ[{28}, Mod[#, 45]]&] (* Vincenzo Librandi, Aug 26 2012 *)
Select[Range[28, 9000, 45], PrimeQ] (* Harvey P. Dale, Aug 01 2024 *)
PROG
(PARI) forprime(p=2, 1e4, if(p%45==28, print1(p", "))) \\ Charles R Greathouse IV, Oct 31 2011
(Magma) [p: p in PrimesUpTo(10000) | p mod 45 eq 28]; // Vincenzo Librandi, Aug 26 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved