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A323006
Numbers k such that 363*2^k+1 is prime.
1
1, 2, 5, 16, 29, 61, 136, 145, 157, 178, 560, 581, 1001, 1234, 1325, 1370, 1405, 1541, 2761, 2984, 5441, 6386, 9769, 10756, 14144, 18385, 26233, 27496, 42422, 48865, 72473, 115372, 123262, 123836, 229264, 359725, 401653, 484076, 611998, 762961, 1319756
OFFSET
1,2
MAPLE
select(k->isprime(363*2^k+1), [$1..1000]); # Muniru A Asiru, Jan 02 2019
MATHEMATICA
Select[Range[1000], PrimeQ[363*2^# + 1] &] (* Robert Price, Jan 01 2019 *)
CROSSREFS
Sequence in context: A137997 A213359 A328000 * A361257 A139022 A196025
KEYWORD
nonn,hard
AUTHOR
Robert Price, Jan 01 2019
STATUS
approved