A262099 Primes p such that 2^p + 17 is also prime.

13, 769, 4441, 184189

Offset

1,1

Comments

a(5) > 5*10^5. - Robert Price, Sep 18 2015

A000040 INTERSECT A057200. - Robert Price, Sep 18 2015

Links

Table of n, a(n) for n=1..4.

Example

13 is in sequence because 2^13 + 17 = 8209 is prime.

Mathematica

Select[Prime[Range[1000]], PrimeQ[2^# + 17] &]

Prog

(Magma) [p: p in PrimesUpTo(1000) | IsPrime(2^p+17)];
(PARI) for(n=1, 1e3, if(isprime((2^prime(n))+17), print1(prime(n)", "))) \\ Altug Alkan, Sep 18 2015

Crossrefs

Subsequence of primes of A057200.

Cf. similar sequences listed in A262098.

Sequence in context: A297748 A086157 A033509 * A301644 A182932 A221934

Adjacent sequences: A262096 A262097 A262098 * A262100 A262101 A262102

Keyword

nonn,more

Author

Vincenzo Librandi, Sep 18 2015

Status

approved