Numbers k such that N*2^k - 1 is prime where N = 9999999999999999999999988888888888888888887777777777777777766666666666665555555555544444443333322211.
A098466
Numbers k such that N*2^k - 1 is prime where N = 9999999999999999999999988888888888888888887777777777777777766666666666665555555555544444443333322211.
Terms
- a(0) =86a(1) =146a(2) =806a(3) =5010a(4) =19338a(5) =20210a(6) =67278a(7) =83406
External references
- oeis: A098466