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A318194
Numbers k such that 467*2^k+1 is prime.
0
19, 247, 547, 1783, 3475, 10987, 23599, 266899, 387139, 785695, 2085835, 2749195
OFFSET
1,1
MATHEMATICA
Select[Range[1000], PrimeQ[467*2^# + 1] &]
CROSSREFS
Sequence in context: A019512 A025927 A224180 * A019443 A021229 A021464
KEYWORD
nonn,more,hard
AUTHOR
Robert Price, Jan 07 2019
EXTENSIONS
a(11)-a(12) from Jeppe Stig Nielsen, Jan 04 2020
STATUS
approved