A385782 Primes having only {1, 6, 8} as digits.

11, 61, 181, 661, 811, 881, 1181, 1811, 1861, 6661, 8111, 8161, 8681, 8861, 11161, 11681, 16111, 16661, 16811, 18181, 18661, 61681, 61861, 66161, 68111, 68161, 68611, 68881, 81181, 81611, 86111, 86161, 86861, 88661, 88681, 88811, 88861, 111611, 116681, 116881

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[{1, 6, 8}, n], PrimeQ], {n, 7}]]
Select[10Flatten[Table[FromDigits/@Tuples[{1, 6, 8}, n], {n, 5}]]+1, PrimeQ] (* Harvey P. Dale, Aug 27 2025 *)

Prog

(Magma) [p: p in PrimesUpTo(10^6) | Set(Intseq(p)) subset [1, 6, 8]];
(Python) print(list(islice(primes_with("168"), 41))) # uses function/imports in A385776
(PARI) primes_with(, 1, [1, 6, 8]) \\ uses function in A385776

Crossrefs

Subsequence of A030430. Supersequence of A020454, A020456.

Cf. A000040, A385776.

Sequence in context: A078554 A189227 A002650 * A060884 A141935 A222408

Adjacent sequences: A385779 A385780 A385781 * A385783 A385784 A385785

Keyword

nonn,base,easy

Author

Jason Bard, Jul 13 2025

Status

approved