A214704 - OEIS

A214704

Primes that contain only the digits (2, 3, 7).

2, 3, 7, 23, 37, 73, 223, 227, 233, 277, 337, 373, 727, 733, 773, 2237, 2273, 2333, 2377, 2777, 3323, 3373, 3727, 3733, 7237, 7333, 7723, 7727, 22273, 22277, 22727, 22777, 23227, 23327, 23333, 23773, 27277, 27337, 27733, 27737, 27773, 32233, 32237, 32323

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OFFSET

1,1

COMMENTS

The digits are prime numbers excluding 5.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Flatten[Table[Select[FromDigits/@Tuples[{2, 3, 7}, n], PrimeQ], {n, 6}]]

PROG

(Magma) [p: p in PrimesUpTo(80000) | Set(Intseq(p)) subset [2, 3, 7]];

CROSSREFS