Primes of the form R = 2^k-1+(2^k-2)/(2^(p-k)-1), where p are Mersenne prime exponents listed in A000043.

A242025

Primes of the form R = 2^k-1+(2^k-2)/(2^(p-k)-1), where p are Mersenne prime exponents listed in A000043.

Terms

    a(0) =5a(1) =17a(2) =29a(3) =41a(4) =2729a(5) =8737a(6) =65537a(7) =74897a(8) =174761a(9) =715827881

External references