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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re(2): Really Hard?

| Comment 11 of 17 |

(In reply to re: Really Hard? by Bon)

My point was that a straightforward approach would probably be very hard. Your contradition proof was just what was needed.

Posted by Richard on 2004-12-12 19:23:44

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