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 A107693 Primes with digital product = 7. 12
 7, 17, 71, 1117, 1171, 11117, 11171, 1111711, 1117111, 1171111, 11111117, 11111171, 71111111, 1117111111, 1711111111, 17111111111, 1111171111111, 11111111111111171, 11111111171111111, 1111111111111111171 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of A034054. - Michel Marcus, Jul 27 2016 LINKS MATHEMATICA Flatten[ Table[ Select[ Sort[ FromDigits /@ Permutations[ Flatten[{7, Table[1, {n}]}]]], PrimeQ[ # ] &], {n, 0, 20}]] Select[Prime[Range[3 10^6]], Times@@IntegerDigits[#] == 7 &] (* Vincenzo Librandi, Jul 27 2016 *) PROG (MAGMA) [p: p in PrimesUpTo(3*10^8) | &*Intseq(p) eq 7]; // Vincenzo Librandi, Jul 27 2016 CROSSREFS Cf. A034054. Cf. A004022, A107612, A107689, A107690, A107691, A107692, A107694, A107695, A107696, A107697, A107698. Sequence in context: A120876 A216073 A086870 * A217717 A122528 A123206 Adjacent sequences:  A107690 A107691 A107692 * A107694 A107695 A107696 KEYWORD base,nonn AUTHOR Zak Seidov and Robert G. Wilson v, May 20 2005 STATUS approved

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Last modified October 19 16:08 EDT 2019. Contains 328223 sequences. (Running on oeis4.)