This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A260830 #18 Jul 21 2025 00:48:54
%S A260830 5,7,557,577,587,757,787,857,877,887,5557,5857,7577,7757,7877,8887,
%T A260830 55787,57557,57587,57787,58757,58787,75557,75577,75787,77557,77587,
%U A260830 78577,78787,78857,78877,78887,85577,87557,87587,87877,87887,555557,555857,557857,558587
%N A260830 Primes having only {5, 7, 8} as digits.
%C A260830 A020467 and A020470 are subsequences.
%H A260830 Alois P. Heinz, <a href="/A260830/b260830.txt">Table of n, a(n) for n = 1..10000</a>
%H A260830 James Maynard and Brady Haran, <a href="https://www.youtube.com/watch?v=eeoBCS7IEqs">Primes without a 7</a>, Numberphile video (2019)
%H A260830 <a href="/index/Pri#PrimesWithDigits">Index to entries for primes with digits in a given set</a>
%t A260830 Select[Prime[Range[2 10^5]], Complement[IntegerDigits[#], {5, 7, 8}] == {} &]
%t A260830 Select[Flatten[Table[FromDigits/@Tuples[{5,7,8},n],{n,6}]],PrimeQ] (* _Harvey P. Dale_, Oct 06 2017 *)
%o A260830 (Magma) [p: p in PrimesUpTo(2*10^6) | Set(Intseq(p)) subset [5,7,8]];
%Y A260830 Cf. similar sequences listed in A260827.
%Y A260830 Cf. A020467, A020470.
%K A260830 nonn,easy,base
%O A260830 1,1
%A A260830 _Vincenzo Librandi_, Aug 02 2015