perplexus.info :: Just Math : How Many ?

How Many ? (Posted on 2004-01-02)

How many positive integers 'n' are there such that [(2)^n + 1] is divisible by 7 ?

See The Solution Submitted by Ravi Raja

Rating: 2.6667 (9 votes)

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| Comment 6 of 7 |

No integer satisfying the given conditions can exist.

Posted by K Sengupta on 2008-02-07 05:14:03

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