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A260379
Primes that contain only the digits (1, 3, 7).
3
3, 7, 11, 13, 17, 31, 37, 71, 73, 113, 131, 137, 173, 311, 313, 317, 331, 337, 373, 733, 773, 1117, 1171, 1373, 1733, 1777, 3137, 3313, 3331, 3371, 3373, 3733, 7177, 7331, 7333, 7717, 11113, 11117, 11131, 11171, 11173, 11177, 11311, 11317, 11717, 11731, 11777
OFFSET
1,1
COMMENTS
A020451, A020455 and A020463 are subsequences.
LINKS
MATHEMATICA
Select[Prime[Range[2 10^3]], Complement[IntegerDigits[#], {1, 3, 7}]=={} &]
PROG
(Magma) [p: p in PrimesUpTo(2*10^4) | Set(Intseq(p)) subset [1, 3, 7]];
CROSSREFS
Cf. similar sequences listed in A260378.
Subsequence of A155055.
Sequence in context: A055211 A183176 A045417 * A045418 A257057 A310197
KEYWORD
nonn,easy,base
AUTHOR
Vincenzo Librandi, Jul 24 2015
STATUS
approved