perplexus.info :: Just Math : 00 Separate

00 Separate (Posted on 2003-10-10)

Prove that the numbers that begin with 1 and end with 1, with any number of 2s in the middle, and all 1s and 2s separated by 00 are composite.

For example:
1002001
1002002001,
1002002002001,
1002002002002001

See The Solution Submitted by Gamer

Rating: 3.5714 (7 votes)

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solution

| Comment 12 of 13 |

1002001
1002002001,
1002002002001,
1002002002002001,
1002002002002002001

Posted by Jim on 2003-10-17 14:45:12

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