OFFSET
1,1
COMMENTS
Primes p such that 2*p + 1 divides Lucas(p) and Mersenne(p).
LINKS
Eric Weisstein's World of Mathematics, Lucas Number
Eric Weisstein's World of Mathematics, Mersenne Number
EXAMPLE
179 is in the sequence since it is prime and 359 is a factor of both Lucas(179) and Mersenne(179) = 2^179 - 1.
PROG
(Magma) [p : p in [59..13619 by 60] | IsPrime(p) and IsPrime(2*p+1)];
(PARI) forstep(p=59, 13619, 60, if(isprime(p)&&isprime(2*p+1), print1(p, ", ")));
CROSSREFS
KEYWORD
nonn
AUTHOR
Arkadiusz Wesolowski, Oct 30 2013
STATUS
approved