Smallest odd prime number Q such that Q*2^P-1 is also prime with P Mersenne prime exponent A000043(n).
A249383
Smallest odd prime number Q such that Q*2^P-1 is also prime with P Mersenne prime exponent A000043(n).
Terms
- a(0) =3a(1) =3a(2) =7a(3) =3a(4) =31a(5) =7a(6) =61a(7) =43a(8) =79a(9) =19a(10) =739a(11) =103a(12) =2707a(13) =4513a(14) =139a(15) =13a(16) =4027a(17) =28027a(18) =14029a(19) =87151a(20) =11257a(21) =8677a(22) =122449a(23) =104161a(24) =113287a(25) =216211a(26) =150097a(27) =862009a(28) =876721a(29) =414949
External references
- oeis: A249383