A023219 Primes p such that 5p+6 is a prime.

5, 7, 11, 13, 19, 29, 37, 41, 47, 53, 61, 79, 83, 97, 103, 107, 113, 127, 131, 137, 139, 149, 151, 163, 181, 193, 197, 211, 229, 233, 239, 257, 263, 271, 293, 313, 347, 359, 373, 379, 389, 401, 421, 431, 443, 449, 461, 467, 487, 503, 509, 523, 541, 547, 557, 569, 571, 593

Offset: 1

Author

David W. Wilson

Keywords

• nonn
• easy

References

• M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988
• Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000
• J. Chavoya, A. Lucero, S. Reynolds, On p-adic valuations of the generalized Fibonacci sequences, in MSRI-UP Research Reports, 2014, pp. 91-109.

Crossrefs

Subset of A081759.

Cf. A090161, A088555, A088561.

Programs

Magma

[p: p in PrimesUpTo(200)| IsPrime(5*p+6)]; // Vincenzo Librandi, Nov 20 2010

Mathematica

Select[Prime[Range[200]],PrimeQ[5#+6]&] (* Harvey P. Dale, Jul 27 2011 *)