A173879 Primes p such that 3*p+4, 5*p+6 and 7*p+8 are also prime.

5, 53, 389, 509, 593, 599, 839, 2879, 2963, 4013, 4799, 5273, 6473, 6719, 6869, 7499, 8243, 10589, 11003, 11069, 15959, 17483, 20123, 21383, 25073, 25583, 27059, 28319, 32213, 34019, 34253, 34913, 37013, 38453, 38609, 38933, 41039, 42569, 43283

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Prime[Range[5000]], PrimeQ[3 # + 4] && PrimeQ[5 # + 6] && PrimeQ[7 # + 8]&] (* Vincenzo Librandi, Apr 10 2013 *)

Prog

(Magma) [p: p in PrimesUpTo(100000) | IsPrime(p) and IsPrime(3*p+4) and IsPrime(5*p+6) and IsPrime(7*p+8)];

Crossrefs

Sequence in context: A068170 A069632 A069617 * A058390 A221236 A198963

Adjacent sequences: A173876 A173877 A173878 * A173880 A173881 A173882

Keyword

nonn,easy

Author

Vincenzo Librandi, Mar 07 2010

Status

approved