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A173879
Primes p such that 3*p+4, 5*p+6 and 7*p+8 are also prime.
1
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
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
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Mar 07 2010
STATUS
approved