OFFSET
1,1
EXAMPLE
63882851=prime((6*3*8*8*2*8*5*1)*(6+3+8+8+2+8+5+1)).
MATHEMATICA
fQ[n_] := Block[{id = IntegerDigits@ n}, n == Prime[Plus @@ id Times @@ id]]; k = 1; lst = {}; While[ k < 10^8, If[ fQ@n, AppendTo[lst, k]; Print@ n]; k++ ]; lst (* Robert G. Wilson v *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Farideh Firoozbakht, Jun 09 2008
STATUS
approved