Odd prime factors of generalized Fermat numbers of the form 11^(2^m) + 1 with m >= 0.
A273949
Odd prime factors of generalized Fermat numbers of the form 11^(2^m) + 1 with m >= 0.
Terms
- a(0) =3a(1) =17a(2) =61a(3) =193a(4) =257a(5) =7321a(6) =15361a(7) =51329a(8) =65537a(9) =163841a(10) =6304673a(11) =15190529a(12) =70254593a(13) =1691123713a(14) =1760464897a(15) =3221225473a(16) =3489660929a(17) =4696846849a(18) =6874464257a(19) =53401878529a(20) =111489577217a(21) =149300051969a(22) =184683593729a(23) =206158430209a(24) =447600088289
External references
- oeis: A273949