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A174591 Numbers n such that n, 2*n+1, 3*n+2, 4*n+3, 5*n+4 and 6*n+7 are primes. 1
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 (list; graph; refs; listen; history; text; internal format)
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: A258181 A067258 A167424 * A065197 A300348 A336783

Adjacent sequences:  A174588 A174589 A174590 * A174592 A174593 A174594

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Mar 23 2010

STATUS

approved

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Last modified April 16 18:53 EDT 2021. Contains 343050 sequences. (Running on oeis4.)