Primes starting a Cunningham chain of the first kind of length 4.

Terms

a(0) =509a(1) =1229a(2) =1409a(3) =2699a(4) =3539a(5) =6449a(6) =10589a(7) =11549a(8) =11909a(9) =12119a(10) =17159a(11) =19709a(12) =19889a(13) =22349a(14) =26189a(15) =27479a(16) =30389a(17) =43649a(18) =55229a(19) =57839a(20) =60149a(21) =71399a(22) =74699a(23) =75329a(24) =82499a(25) =87539a(26) =98369a(27) =101399a(28) =104369a(29) =112919