Composite numbers which contain their largest proper divisor as a substring.

Terms

a(0) =15a(1) =25a(2) =125a(3) =1537a(4) =3977a(5) =11371a(6) =38117a(7) =110317a(8) =117197a(9) =123679a(10) =143323a(11) =146137a(12) =179297a(13) =197513a(14) =316619a(15) =390913a(16) =397139a(17) =399797a(18) =485357a(19) =779917a(20) =797191a(21) =990919a(22) =1110691a(23) =1178951a(24) =1483117a(25) =1723717a(26) =1813733a(27) =2165299a(28) =2273099a(29) =2369777