OFFSET
1,1
COMMENTS
a(17) > 22800. - Jinyuan Wang, Mar 19 2020
a(19) > 30000. - Tyler NeSmith, Apr 12 2022
PROG
(PARI) is(n)=ispseudoprime((2^127-1)*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Pierre CAMI, Sep 25 2004
EXTENSIONS
a(15)-a(16) from Jinyuan Wang, Mar 19 2020
a(17)-a(18) from Tyler NeSmith, Apr 12 2022
a(19)-a(20) from Michael S. Branicky, Apr 22 2023
a(21) from Michael S. Branicky, Jul 23 2024
STATUS
approved