A174591 Numbers n such that n, 2*n+1, 3*n+2, 4*n+3, 5*n+4 and 6*n+7 are primes.

5, 89, 154769, 209039, 513239, 658349, 709589, 1265549, 1527629, 1698569, 1937459, 2022389, 2397449, 3486839, 5053949, 5642369, 5917259, 7057769, 7685459, 8071139, 8424569, 9864839, 10366439, 11673899, 12327629, 12935999

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..186

Mathematica

Select[Prime[Range[1000000]], And@@PrimeQ/@{2 # + 1, 3 # + 2, 4 # + 3, 5 # + 4, 6 # + 7} &] (* Vincenzo Librandi, Sep 24 2014 *)

Prog

(Magma) [n: n in [1..15000000] | IsPrime(n) and IsPrime(2*n+1) and IsPrime(3*n+2) and IsPrime(4*n+3) and IsPrime(5*n+4) and IsPrime(6*n+7)];

Crossrefs

Sequence in context: A355082 A067258 A167424 * A065197 A300348 A336783

Adjacent sequences: A174588 A174589 A174590 * A174592 A174593 A174594

Keyword

nonn

Author

Vincenzo Librandi, Mar 23 2010

Status

approved