Numbers whose product of digits is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =12a(5) =13a(6) =15a(7) =17a(8) =21a(9) =31a(10) =51a(11) =71a(12) =112a(13) =113a(14) =115a(15) =117a(16) =121a(17) =131a(18) =151a(19) =171a(20) =211a(21) =311a(22) =511a(23) =711a(24) =1112a(25) =1113a(26) =1115a(27) =1117a(28) =1121a(29) =1131