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A261267 Primes that contain only the digits (0, 2, 7). 2

%I

%S 2,7,227,277,727,2027,2207,2707,2777,7027,7207,7727,20707,22027,22277,

%T 22727,22777,27077,27277,70207,72077,72227,72277,72707,72727,200227,

%U 202277,202777,207227,222007,222707,227027,227207,227707,272227,272777,277007

%N Primes that contain only the digits (0, 2, 7).

%C A020459 is a subsequence.

%H Alois P. Heinz, <a href="/A261267/b261267.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Prime[Range[6 10^4]], Complement[IntegerDigits[#], {0, 2, 7}] == {}&]

%o (MAGMA) [p: p in PrimesUpTo(2*10^6) | Set(Intseq(p)) subset [0, 2, 7]];

%Y Cf. Primes that contain only the digits (0,2,k): A036953 (k=1), A260125 (k=3), this sequence (k=7), A261268 (k=9).

%Y Cf. A000040, A020459.

%K nonn,easy,base

%O 1,1

%A _Vincenzo Librandi_, Aug 13 2015

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Last modified September 28 17:43 EDT 2020. Contains 337393 sequences. (Running on oeis4.)