OFFSET
1,1
MATHEMATICA
Sort[Select[FromDigits/@Flatten[Permutations/@Subsets[{2, 3, 5, 7}, {2, 3}], 1], PrimeQ]] (* Harvey P. Dale, Jul 08 2014 *)
CROSSREFS
KEYWORD
nonn,fini,full,base
AUTHOR
Lekraj Beedassy, Aug 11 2008
STATUS
approved