A260270 Primes having only {1, 4, 8} as digits.

11, 41, 181, 811, 881, 1181, 1481, 1811, 4111, 4441, 4481, 8111, 11411, 14411, 18181, 18481, 41141, 41411, 44111, 48481, 81181, 84181, 84481, 84811, 88411, 88811, 118411, 141181, 141481, 141811, 144481, 148411, 181141, 184111, 184181, 184441, 411841, 418181

Offset: 1

Author

Vincenzo Librandi, Jul 23 2015

Keywords

• nonn
• easy
• base

Comments

A020452 and A020456 are subsequences.

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. similar sequences listed in A260266.

Cf. A020452, A020456.

Programs

Magma

[p: p in PrimesUpTo(5*10^5) | Set(Intseq(p)) subset [1, 4, 8]];

Mathematica

Select[Prime[Range[4 10^4]], Complement[IntegerDigits[#], {1, 4, 8}]=={} &]
Table[Select[10#+1&/@(FromDigits/@Tuples[{1,4,8},n]),PrimeQ],{n,5}]// Flatten (* Harvey P. Dale, Jun 08 2019 *)