

A262100


Primes p such that 2^p + 29 is also prime.


1



3, 5, 7, 13, 17, 23, 37, 43, 73, 79, 89, 127, 239, 409, 2543, 10837, 24749, 29879, 181913
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OFFSET

1,1


COMMENTS

a(20) > 419637.  Robert Price, Oct 04 2015


LINKS

Table of n, a(n) for n=1..19.


EXAMPLE

3 is in sequence because 2^3 + 29 = 37 is prime.
5 is in sequence because 2^5 + 29 = 61 is prime.


MATHEMATICA

Select[Prime[Range[1000]], PrimeQ[2^# + 29] &]


PROG

(MAGMA) [p: p in PrimesUpTo(1000)  IsPrime(2^p+29)];
(PARI) for(n=1, 1e3, if(isprime((2^prime(n))+29), print1(prime(n)", "))) \\ Altug Alkan, Sep 18 2015
(Perl) use ntheory ":all"; use Math::GMP ":constant"; forprimes { say if is_prob_prime(2**$_+29) } 1e4; # Dana Jacobsen, Oct 03 2015


CROSSREFS

Subsequence of primes of A156982.
Cf. similar sequences listed in A262098.
Sequence in context: A028879 A067567 A104294 * A171566 A137270 A071111
Adjacent sequences: A262097 A262098 A262099 * A262101 A262102 A262103


KEYWORD

nonn,more


AUTHOR

Vincenzo Librandi, Sep 18 2015


EXTENSIONS

a(17)a(18) from Dana Jacobsen, Oct 03 2015
a(19) derived from A156982 by Robert Price, Oct 04 2015


STATUS

approved



