A386160 Primes having only {2, 5, 6, 7} as digits.

2, 5, 7, 67, 227, 257, 277, 557, 577, 677, 727, 757, 2267, 2557, 2657, 2677, 2767, 2777, 5227, 5527, 5557, 5657, 6257, 6277, 6577, 7577, 7727, 7757, 22277, 22567, 22727, 22777, 25577, 25657, 25667, 26227, 26267, 26557, 26627, 26777, 27277, 27527, 27767, 52267

Offset: 1

Author

Jason Bard, Jul 18 2025

Keywords

• nonn
• base
• easy

Links

• Jason Bard, Table of n, a(n) for n = 1..10000
• Index to entries for primes with digits in a given set

Crossrefs

Supersequence of A214705, A260829, A385787.

Cf. A000040, A030432, A385776.

Programs

Magma

[p: p in PrimesUpTo(10^6) | Set(Intseq(p)) subset [2, 5, 6, 7]];

Mathematica

Flatten[Table[Select[FromDigits /@ Tuples[{2, 5, 6, 7}, n], PrimeQ], {n, 7}]]

PARI

primes_with(, 1, [2, 5, 6, 7]) \\ uses function in A385776

Python

print(list(islice(primes_with("2567"), 41))) # uses function/imports in A385776