OFFSET
1,1
COMMENTS
If it exists, a(12) > 100000. - Hugo Pfoertner, Nov 03 2023
MATHEMATICA
Select[Range[3000], PrimeQ[#^3*2^# - 1] &] (* Amiram Eldar, Nov 04 2023 *)
PROG
(Magma) [k: k in [1..700] | IsPrime(k^3*2^k-1)];
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Juri-Stepan Gerasimov, Nov 02 2023
EXTENSIONS
a(11) from Hugo Pfoertner, Nov 02 2023
STATUS
approved