perplexus.info :: Just Math : Division

Division (Posted on 2004-12-11)

For which positive integer values of N is 2^N-1 a multiple of N?

See The Solution Submitted by e.g.

Rating: 3.8333 (6 votes)

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| Comment 12 of 17 |

This doesn't seem hard to me. Why is it not any multiple of 2? Unless the problem is (2^N)-1 rather than 2^(N-1).

Posted by Yom on 2004-12-14 23:01:52

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