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A322302 Primes p such that 11*2^p + 1 is also prime. 0
3, 5, 7, 19, 43, 127, 211, 15329, 28277, 3771821 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes in A002261.

LINKS

Table of n, a(n) for n=1..10.

MAPLE

select(p->isprime(p) and isprime(11*2^p+1), [$1..1000]); # Muniru A Asiru, Dec 20 2018

MATHEMATICA

Select[Prime[Range[1000]], PrimeQ[11 2^# + 1] &]

PROG

(MAGMA) [p: p in PrimesUpTo (6000) | IsPrime(11*2^p+1)];

(GAP) Filtered([1..1000], p -> IsPrime(p) and IsPrime(11*2^p+1)); # Muniru A Asiru, Dec 20 2018

CROSSREFS

Cf. A002261, A175172.

Sequence in context: A106919 A005850 A052334 * A154526 A126144 A171643

Adjacent sequences:  A322299 A322300 A322301 * A322303 A322306 A322307

KEYWORD

nonn,more

AUTHOR

Vincenzo Librandi, Dec 20 2018

EXTENSIONS

a(10) from Joerg Arndt Dec 20 2018

STATUS

approved

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Last modified July 23 03:00 EDT 2019. Contains 325230 sequences. (Running on oeis4.)