OFFSET
1,1
COMMENTS
57885161, 74207281 and 77232917 are in this sequence as well. - Ivan Panchenko, Apr 13 2018
82589933 is in the sequence as well. - David Benjamin, Mar 30 2022
LINKS
Chris K. Caldwell, The largest known primes.
FORMULA
MATHEMATICA
Select[MersennePrimeExponent[Range[48]], Mod[#, 4] != 3 &] (* Amiram Eldar, Oct 18 2024 *)
PROG
(PARI) is(n)=n%4 < 3 && isprime(n) && isprime(2^n-1) \\ Charles R Greathouse IV, Nov 28 2016
CROSSREFS
KEYWORD
nonn
AUTHOR
Jorge Coveiro, Dec 27 2005
EXTENSIONS
Edited by R. J. Mathar, Oct 06 2008
a(26)-a(28) from Ivan Panchenko, Apr 13 2018
a(29) from Amiram Eldar, Oct 18 2024
STATUS
approved