A130745 Least k such that k*6*(M(n)^500)-1 is prime where M(i)= i-th Mersenne prime.

55, 142, 1945, 570, 220, 7124, 2329, 7054, 10005, 447, 14505, 4322

Offset

1,1

Comments

All primes certified using PFGW from Primeform group

Links

Table of n, a(n) for n=1..12.

Example

55*6*(3^500)-1 is prime 3=2^2-1=first Mersenne prime, 55 is k(1)

Crossrefs

Cf. Mersenne primes.

Sequence in context: A044306 A044687 A250578 * A096664 A067978 A072429

Adjacent sequences: A130742 A130743 A130744 * A130746 A130747 A130748

Keyword

nonn

Author

Pierre CAMI, Jul 12 2007

Status

approved