OFFSET
1,1
COMMENTS
Permutations of the four prime digits 2, 3, 5, 7 that are primes. - Lekraj Beedassy, May 12 2009
MATHEMATICA
Select[FromDigits/@Permutations[{2, 3, 5, 7}], PrimeQ] (* Harvey P. Dale, Jul 04 2013 *)
CROSSREFS
KEYWORD
fini,full,nonn,base
AUTHOR
Lekraj Beedassy, Feb 04 2008
STATUS
approved