A385787 Primes having only {2, 6, 7} as digits.

2, 7, 67, 227, 277, 677, 727, 2267, 2677, 2767, 2777, 6277, 7727, 22277, 22727, 22777, 26227, 26267, 26627, 26777, 27277, 27767, 62627, 67777, 72227, 72277, 72727, 72767, 76667, 76777, 77267, 226267, 226777, 227267, 227627, 262627, 266677, 266767, 267227

Offset

1,1

Links

Jason Bard, Table of n, a(n) for n = 1..10000

Index to entries for primes with digits in a given set

Mathematica

Flatten[Table[Select[FromDigits /@ Tuples[{2, 6, 7}, n], PrimeQ], {n, 7}]]

Prog

(Magma) [p: p in PrimesUpTo(10^6) | Set(Intseq(p)) subset [2, 6, 7]];
(Python) print(list(islice(primes_with("267"), 41))) # uses function/imports in A385776
(PARI) primes_with(, 1, [2, 6, 7]) \\ uses function in A385776

Crossrefs

Supersequence of A020459, A020469.

Cf. A000040, A030432, A385776.

Sequence in context: A246865 A386051 A386165 * A133237 A099660 A341088

Adjacent sequences: A385784 A385785 A385786 * A385788 A385789 A385790

Keyword

nonn,base,easy

Author

Jason Bard, Jul 13 2025

Status

approved