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A323032
Numbers k such that 351*2^k+1 is prime.
1
12, 13, 15, 31, 36, 45, 53, 123, 153, 155, 172, 223, 247, 269, 287, 353, 1416, 2601, 3525, 3833, 4709, 5533, 6091, 6163, 7545, 7879, 10995, 11036, 12361, 12953, 13132, 13252, 19885, 20108, 22891, 28795, 33195, 34213, 39372, 46689, 57273, 62733, 66492, 68291
OFFSET
1,1
MAPLE
select(k->isprime(351*2^k+1), [$1..1000]); # Muniru A Asiru, Jan 02 2019
MATHEMATICA
Select[Range[1000], PrimeQ[351*2^# + 1] &]
CROSSREFS
Sequence in context: A242912 A102496 A267615 * A003894 A084622 A155147
KEYWORD
nonn,hard
AUTHOR
Robert Price, Jan 02 2019
STATUS
approved