A216668 Smallest integer b > 1 such that for all primes p <= prime(n), (b+1)^p - b^p is prime if and only if 2^p-1 is prime.
2, 2, 2, 296, 296, 369719, 457578, 43410300320, 43410300320, 43410300320, 288975248496
Offset: 1
Crossrefs
Cf. A216666.
Extensions
a(11) from Jean-Louis Charton, Oct 03 2012