A069680 - OEIS

%I #11 Jan 26 2023 15:07:40

%S 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,

%T 97,151,157,251,257,353,359,457,557,653,659,751,757,853,857,859,953,

%U 1553,1559,2551,2557,3557,3559,5557,6551,6553,7559,9551,15551,15559,45553

%N Primes with either no internal digits or all internal digits are 5.

%Y Cf. A069675, A069676, A069677, A069678, A069679, A069681, A069682, A069683, A069684.

%K nonn,base

%O 1,1

%A _Amarnath Murthy_, Apr 06 2002

%E Offset corrected and name changed by _Arkadiusz Wesolowski_, Sep 07 2011