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Primes whose only prime digits are 5's.
2

%I #9 Mar 26 2024 07:26:32

%S 5,59,151,509,541,569,599,659,859,1051,1151,1451,1459,1511,1549,1559,

%T 1951,4051,4159,4451,4519,4549,4561,4591,4651,4951,5009,5011,5051,

%U 5059,5081,5099,5101,5119,5189,5419,5441,5449,5501,5519,5569,5581,5591,5641

%N Primes whose only prime digits are 5's.

%H Jason Yuen, <a href="/A179028/b179028.txt">Table of n, a(n) for n = 1..10000</a>

%Y Cf. A179029.

%K nonn,base

%O 1,1

%A _Lekraj Beedassy_, Jun 25 2010

%E Terms confirmed by _Ray Chandler_, Jul 13 2010