A260380 Primes that contain only the digits (3, 6, 7).

3, 7, 37, 67, 73, 337, 367, 373, 673, 677, 733, 773, 3373, 3637, 3673, 3677, 3733, 3767, 6337, 6367, 6373, 6637, 6673, 6733, 6737, 6763, 7333, 7673, 33377, 33637, 33767, 33773, 36373, 36637, 36677, 36767, 37337, 37363, 37633, 37663, 63337, 63367, 63377, 63667

Offset

1,1

Comments

A020463 and A020469 are subsequences.

Links

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

Mathematica

Select[Prime[Range[2 10^4]], Complement[IntegerDigits[#], {3, 6, 7}]=={} &]
Select[Flatten[Table[FromDigits/@Tuples[{3, 6, 7}, n], {n, 5}]], PrimeQ] (* Harvey P. Dale, Apr 13 2022 *)

Prog

(Magma) [p: p in PrimesUpTo(2*10^5) | Set(Intseq(p)) subset [3, 6, 7]];

Crossrefs

Cf. similar sequences listed in A260378.

Cf. A020463, A020469.

Sequence in context: A199347 A252795 A049493 * A363667 A260382 A260381

Adjacent sequences: A260377 A260378 A260379 * A260381 A260382 A260383

Keyword

nonn,easy,base

Author

Vincenzo Librandi, Aug 01 2015

Status

approved