A386020 Primes having only {0, 1, 2, 7} as digits.

2, 7, 11, 17, 71, 101, 107, 127, 211, 227, 271, 277, 701, 727, 1021, 1117, 1171, 1201, 1217, 1277, 1721, 1777, 2011, 2017, 2027, 2111, 2207, 2221, 2707, 2711, 2777, 7001, 7027, 7121, 7127, 7177, 7207, 7211, 7717, 7727, 10007, 10111, 10177, 10211, 10271, 10711

Offset: 1

Author

Jason Bard, Jul 14 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 A036953, A199327, A260889.

Cf. A000040, A385776.

Programs

Magma

[p: p in PrimesUpTo(10^6) | Set(Intseq(p)) subset [0, 1, 2, 7]];

Mathematica

Select[FromDigits /@ Tuples[{0, 1, 2, 7}, n], PrimeQ]

PARI

primes_with(, 1, [0, 1, 2, 7]) \\ uses function in A385776

Python

print(list(islice(primes_with("0127"), 41))) # uses function/imports in A385776