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A173876 Primes p such that 3*p+2, 5*p+4 and 7*p+6 are also prime. 1
5, 83, 419, 479, 1259, 1583, 1949, 2099, 2609, 4049, 4079, 5333, 6359, 6473, 7019, 7523, 7559, 8699, 11933, 14939, 15329, 17573, 21839, 22013, 23633, 24683, 25733, 25763, 26633, 28703, 28979, 29819, 31079, 31139, 32999, 34439, 35129, 38729 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

Select[Prime[Range[5000]], PrimeQ[3 # + 2] && PrimeQ[5 # + 4] && PrimeQ[7 # + 6] &] (* Vincenzo Librandi, Apr 10 2013 *)

PROG

(MAGMA) [p: p in PrimesUpTo(100000) | IsPrime(p) and IsPrime(3*p+2) and IsPrime(5*p+4) and IsPrime(7*p+6)];

CROSSREFS

Sequence in context: A163011 A142162 A082546 * A250549 A035512 A054953

Adjacent sequences:  A173873 A173874 A173875 * A173877 A173878 A173879

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Mar 07 2010

STATUS

approved

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Last modified June 18 01:16 EDT 2021. Contains 345098 sequences. (Running on oeis4.)