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%I #12 Sep 08 2022 08:46:13
%S 7,79,97,709,797,907,977,997,7079,7907,9007,9907,70009,70079,70099,
%T 70709,70979,70997,70999,77797,77977,77999,79777,79907,79979,79997,
%U 79999,90007,90709,90907,90977,90997,97007,97777,99079,99707,99709,99907,700079
%N Primes that contain only the digits (0, 7, 9).
%C A020471 is a subsequence.
%H Alois P. Heinz, <a href="/A261181/b261181.txt">Table of n, a(n) for n = 1..10000</a>
%H James Maynard and Brady Haran, <a href="https://www.youtube.com/watch?v=eeoBCS7IEqs">Primes without a 7</a>, Numberphile video (2019)
%t Select[Prime[Range[6 10^4]], Complement[IntegerDigits[#], {0, 7, 9}] == {} &]
%o (Magma) [p: p in PrimesUpTo(2*10^5) | Set(Intseq(p)) subset [0, 7, 9]];
%Y Cf. Primes that contain only the digits (k,7,9): this sequence (k=0), A260893 (k=1), A261182 (k=2), A260382 (k=3), A261183 (k=4), A260831 (k=5), A261184 (k=6), A106110 (k=8).
%Y Cf. A000040, A020471.
%K nonn,easy,base
%O 1,1
%A _Vincenzo Librandi_, Aug 11 2015
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