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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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 13 07:13 EDT 2022. Contains 356078 sequences. (Running on oeis4.)