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A260270
Primes that contain only the digits (1, 4, 8).
2
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
1,1
COMMENTS
A020452 and A020456 are subsequences.
LINKS
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 *)
PROG
(Magma) [p: p in PrimesUpTo(5*10^5) | Set(Intseq(p)) subset [1, 4, 8]];
CROSSREFS
Cf. similar sequences listed in A260266.
Sequence in context: A199209 A156733 A079304 * A118572 A333084 A201709
KEYWORD
nonn,easy,base
AUTHOR
Vincenzo Librandi, Jul 23 2015
STATUS
approved