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A323148
Numbers k such that 439*2^k+1 is prime.
0
6, 18, 34, 54, 58, 454, 538, 994, 1122, 3222, 6582, 8886, 14974, 53014, 127086, 499662, 1112314, 1288818, 1408326
OFFSET
1,1
MAPLE
select(k->isprime(439*2^k+1), [$1..1000]); # Muniru A Asiru, Jan 05 2019
MATHEMATICA
Select[Range[1000], PrimeQ[439*2^# + 1] &]
CROSSREFS
Sequence in context: A153126 A110671 A134078 * A181510 A301715 A269755
KEYWORD
nonn,more,hard
AUTHOR
Robert Price, Jan 05 2019
STATUS
approved