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A262934
Prime p such that 2^p + 27 is also prime.
1
2, 5, 13, 41, 89113
OFFSET
1,1
COMMENTS
a(6) > 376790.
FORMULA
A000040 INTERSECT A157007.
EXAMPLE
Prime 5 is in sequence because 2^5 + 27 = 59, which is also prime.
MATHEMATICA
Select[Prime[Range[100000]], PrimeQ[(2^# + 27)] &]
PROG
(PARI) forprime(p=2, 10^30, if (isprime(2^p + 3^3), print1(p", "))); \\ Altug Alkan, Oct 04 2015
(Magma) [p: p in PrimesUpTo(100) | IsPrime(2^p+27)]; // Vincenzo Librandi, Oct 05 2015
CROSSREFS
Cf. A157007.
Cf. similar sequences of the type "Primes p such that 2^p + k" listed in A262098.
Sequence in context: A179264 A096724 A088553 * A149869 A149870 A149871
KEYWORD
nonn,more
AUTHOR
Robert Price, Oct 04 2015
STATUS
approved