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%I #2 Mar 31 2012 14:40:00
%S 23,137,157,173,223,227,229,263,283,313,317,331,337,353,359,373,379,
%T 397,557,571,577,593,733,739,751,757,773,797,823,827,937,953,977,1033,
%U 1123,1213,1217,1231,1237,1259,1277,1279,1297,1303,1307,1321,1327,1367,1433
%N Primes n with property that sum of digits is prime and number of prime digits is prime.
%C a(2)=137, 137 is prime, sum of digits 11 is prime, number of prime digits {3,7} 2 is prime, a(6)=223, 223 is prime, sum of digits 7 is prime, number of prime digits {2,2,3} 3 is prime, a (15)=359, 359 is prime, sum of digits 17 is prime, number of prime digits {3,5} 2 is prime, ...
%Y Cf. A093805, A094317, A094318.
%K nonn,base
%O 1,1
%A _Jani Melik_, May 19 2004
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