1,1

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300

Ray Ballinger, Proth Search Page

Y. Gallot, Proth.exe: Windows Program for Finding Large Primes

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

Cf. A050539 = 27*2^n-1 is prime.

Sequence in context: A072964 A030033 A135131 this_sequence A026731 A026764 A027230

Adjacent sequences: A032360 A032361 A032362 this_sequence A032364 A032365 A032366

nonn,hard

Jim Buddenhagen (jbuddenh(AT)gmail.com)

More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 20 2003

More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Aug 17 2004