Primes p such that for every k >= 1, p*2^k - 1 has a divisor in the set {3, 5, 13, 17, 97, 241, 257}.
A263562
Primes p such that for every k >= 1, p*2^k - 1 has a divisor in the set {3, 5, 13, 17, 97, 241, 257}.
Terms
- a(0) =1865978047a(1) =1889699677a(2) =2362339121a(3) =3637126963a(4) =11776639499a(5) =19321614419a(6) =20000692169a(7) =20111311169a(8) =20592473107a(9) =20597584901a(10) =21477425107a(11) =23368396573a(12) =23479945327a(13) =25326720611a(14) =26161244323a(15) =27190405961a(16) =27380064223a(17) =27474950743a(18) =31467088979
External references
- oeis: A263562