OFFSET
1,1
MATHEMATICA
nc5pQ[n_]:=PrimeQ[FromDigits[Join[IntegerDigits[n], IntegerDigits[n+5]]]]; Select[Range[500], nc5pQ] (* Harvey P. Dale, Mar 25 2016 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, May 15 1998
STATUS
approved