Noncomposite concatenations of divisors of some k, ordered by k.

Terms

a(0) =1a(1) =13a(2) =17a(3) =139a(4) =113a(5) =13721a(6) =131a(7) =137a(8) =167a(9) =173a(10) =179a(11) =197a(12) =1103a(13) =1109a(14) =111121a(15) =1151a(16) =1163a(17) =1181a(18) =1361183a(19) =1193a(20) =1373219a(21) =1223a(22) =1229a(23) =1379237a(24) =1277a(25) =1283a(26) =1307a(27) =131133121363a(28) =1367a(29) =1373