OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Flatten[Table[Select[FromDigits/@Tuples[{5, 9}, n], PrimeQ], {n, 8}]] (* Vincenzo Librandi, Jul 27 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(95559559 ) | Set(Intseq(p)) subset [5, 9]]; // Vincenzo Librandi, Jul 27 2012
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved