A385778 Primes having only {1, 3, 8} as digits.

3, 11, 13, 31, 83, 113, 131, 181, 311, 313, 331, 383, 811, 881, 883, 1181, 1381, 1811, 1831, 3181, 3313, 3331, 3833, 3881, 8111, 8311, 8831, 11113, 11131, 11311, 11383, 11813, 11831, 11833, 13183, 13313, 13331, 13381, 13831, 13883, 18131, 18133, 18181, 18311

Offset: 1

Author

Jason Bard, Jul 13 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 A020451, A020456, A020464.

Cf. A000040, A385776.

Programs

Magma

[p: p in PrimesUpTo(10^6) | Set(Intseq(p)) subset [1, 3, 8]];

Mathematica

Flatten[Table[Select[FromDigits /@ Tuples[{1, 3, 8}, n], PrimeQ], {n, 7}]]

PARI

primes_with(, 1, [1, 3, 8]) \\ uses function in A385776

Python

print(list(islice(primes_with("138"), 41))) # uses function/imports in A385776