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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
OFFSET
1,1
COMMENTS
Primes in A002261.
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
Sequence in context: A005850 A052334 A373292 * A154526 A126144 A171643
KEYWORD
nonn,more
AUTHOR
Vincenzo Librandi, Dec 20 2018
EXTENSIONS
a(10) from Joerg Arndt Dec 20 2018
STATUS
approved