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A215610
Odd integers n such that 2^n == 2^6 (mod n).
11
1, 31, 18631, 55831, 92329, 3014633, 3556559, 6429121, 9664591, 12158831, 33554431, 34844431, 566740481, 644903881, 727815241, 842608801, 2207017049, 2208171881, 2445644207, 8694918511, 9031128791, 18738146881, 27345981361, 35476604081
OFFSET
1,2
COMMENTS
Also, the odd solutions to 2^(n-6) == 1 (mod n). The only even solution is n=6.
For all m, 2^A033981(m)-1 belongs to this sequence.
LINKS
Max Alekseyev, Table of n, a(n) for n = 1..102 (all terms below 10^14)
MATHEMATICA
m = 64; Join[Select[Range[1, m, 2], Divisible[2^# - m, #] &],
Select[Range[m + 1, 10^6, 2], PowerMod[2, #, #] == m &]] (* Robert Price, Oct 08 2018 *)
CROSSREFS
The odd terms of A015926.
Sequence in context: A245571 A074218 A161395 * A292009 A086122 A239167
KEYWORD
nonn
AUTHOR
Max Alekseyev, Aug 17 2012
STATUS
approved