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A098126
Numbers k such that (2^127-1)*2^k + 1 is prime.
0
38, 58, 64, 144, 198, 324, 950, 1230, 1934, 4662, 7644, 9060, 10852, 11082, 13740, 16682, 24502, 27574, 54940, 66710, 84402
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
Sequence in context: A077801 A078544 A116243 * A244313 A147616 A193568
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