Sorted list of prime factors of numbers of the form 5^(2^m) + 2^(2^m) with m >= 0.

Terms

a(0) =7a(1) =17a(2) =29a(3) =97a(4) =193a(5) =257a(6) =641a(7) =12289a(8) =22993a(9) =65537a(10) =102593a(11) =115201a(12) =152833a(13) =211457a(14) =993793a(15) =5189633a(16) =26411009a(17) =79280897a(18) =93847553a(19) =167772161a(20) =230686721a(21) =1364951041a(22) =1573071713a(23) =3221225473a(24) =5488091137a(25) =186678460417a(26) =206158430209a(27) =274568286337