Smallest prime dividing the composite near-repdigit number 133...33 consisting of a 1 followed by n 3's, where n=A105427.

A105428

Smallest prime dividing the composite near-repdigit number 133...33 consisting of a 1 followed by n 3's, where n=A105427.

Terms

    a(0) =7a(1) =31a(2) =67a(3) =151a(4) =23a(5) =13a(6) =7a(7) =157a(8) =163a(9) =107a(10) =17a(11) =13a(12) =7a(13) =89a(14) =170809a(15) =31a(16) =13a(17) =7a(18) =4363363a(19) =251a(20) =42169a(21) =43a(22) =13a(23) =7a(24) =641a(25) =17a(26) =6791a(27) =109a(28) =13a(29) =7

External references