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Division (Posted on 2004-12-11) Difficulty: 3 of 5
For which positive integer values of N is 2^N-1 a multiple of N?

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Rating: 3.8333 (6 votes)

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answer | Comment 15 of 16 |
The only possible value of N occurs at N=1.
  Posted by K Sengupta on 2007-04-17 12:08:17
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