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%I #9 Sep 08 2022 08:45:18
%S 181,241,421,811,1181,1811,2141,2221,2411,4211,8111,21221,141121,
%T 142111,411211,1111181,1112141,1121221,1211141,1211411,1212121,
%U 2111411,2121121,2211211,2221111,2411111,4121111,4211111,11221211,12111221,12121121
%N Primes with digital product = 8.
%t Union[ Flatten[ Table[ Select[ Sort[ FromDigits /@ Join[ Permutations[ Flatten[{8, Table[1, {n}]}]], Permutations[ Flatten[{2, 4, Table[1, {n - 1}]}]], Permutations[ Flatten[{2, 2, 2, Table[1, {n - 2}]}] ]]], PrimeQ[ # ] & ], {n, 0, 7}]]]
%t Select[Prime[Range[3 10^6]], Times@@IntegerDigits[#] == 8 &] (* _Vincenzo Librandi_, Jul 27 2016 *)
%o (Magma) [p: p in PrimesUpTo(3*10^7) | &*Intseq(p) eq 8]; // _Vincenzo Librandi_, Jul 27 2016
%Y Cf. A004022, A107612, A107689, A107690, A107691, A107692, A107693, A107695, A107696, A107697, A107698.
%K base,nonn
%O 1,1
%A _Zak Seidov_ and _Robert G. Wilson v_, May 20 2005
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