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A179026 Primes whose only prime digits are 3's. 2

%I

%S 3,13,31,43,83,103,113,131,139,163,193,311,313,331,349,383,389,431,

%T 433,439,443,463,613,631,643,683,839,863,883,983,1013,1031,1033,1039,

%U 1063,1093,1103,1163,1193,1301,1303,1319,1361,1381,1399,1433,1439,1483,1493

%N Primes whose only prime digits are 3's.

%H Harvey P. Dale, <a href="/A179026/b179026.txt">Table of n, a(n) for n = 1..1000</a>

%t pd3Q[n_]:=Module[{idn=IntegerDigits[n]},MemberQ[idn,3]&&Union[PrimeQ[ DeleteCases[ IntegerDigits[n],3]]]=={False}]; Join[{3},Select[ Prime[ Range[300]],pd3Q]] (* _Harvey P. Dale_, Jun 12 2013 *)

%Y Cf. A179027.

%K nonn,base

%O 1,1

%A _Lekraj Beedassy_, Jun 25 2010

%E Corrected by _Ray Chandler_, Jul 13 2010

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Last modified October 17 11:26 EDT 2019. Contains 328108 sequences. (Running on oeis4.)