A205172 Primes p == 5 (mod 8) such that p + 2 is also prime.

5, 29, 101, 149, 197, 269, 461, 821, 1061, 1229, 1277, 1301, 1877, 1949, 1997, 2141, 2237, 2309, 2381, 2549, 2789, 3389, 3461, 3557, 3581, 3821, 3917, 4157, 4229, 4421, 4517, 4637, 5021, 5477, 5501, 5741, 6197, 6269, 6701, 6869, 7349, 7589, 7757, 7877

Offset

1,1

Comments

The lesser of twin primes == 5 (mod 8).

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

select(t -> isprime(t) and isprime(t+2), [seq(i, i=5..10000, 8)]); # Robert Israel, Nov 25 2019

Mathematica

Select[ Prime@ Range@ 1000, Mod[#, 8] == 5 && PrimeQ[# + 2] &]

Prog

(PARI) forprime(p=1, 7900, if(Mod(p, 8)==5 && ispseudoprime(p+2), print1(p, ", "))) \\ Felix Fröhlich, Nov 25 2019

Crossrefs

Cf. A071695, A205171.

Sequence in context: A211062 A330700 A264750 * A139856 A097345 A097344

Adjacent sequences: A205169 A205170 A205171 * A205173 A205174 A205175

Keyword

easy,nonn

Author

Robert G. Wilson v, Jan 22 2012

Status

approved