A106060 Primes p such that 1*p + 8 and 8*p + 1 are primes.

5, 11, 29, 71, 101, 131, 149, 269, 401, 431, 449, 479, 491, 599, 761, 821, 929, 1229, 1289, 1559, 1571, 1601, 1619, 1871, 2081, 2129, 2339, 2531, 2549, 2609, 2741, 3041, 3209, 3299, 3461, 3719, 3761, 4289, 5189, 5861, 6269, 6359, 6569, 6701, 6959, 7211

Offset

1,1

Comments

Cf. A045536: Primes p such that 1*p+2 and 2*p+1 are prime; A007693: Numbers n such that n and 6*n+1 are primes.

Links

Table of n, a(n) for n=1..46.

Mathematica

Select[Prime[Range[220]], PrimeQ[8#+1]&&PrimeQ[1#+8]&]

Prog

(Magma) [p: p in PrimesUpTo(10000) | IsPrime(p+8) and IsPrime(8*p+1)]; // Vincenzo Librandi, Nov 13 2010

Crossrefs

Cf. A007693, A045536.

Sequence in context: A201600 A129780 A154504 * A237642 A059508 A084817

Adjacent sequences: A106057 A106058 A106059 * A106061 A106062 A106063

Keyword

nonn

Author

Zak Seidov, May 07 2005

Status

approved