101111

This number is a prime.

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The smallest prime concatenated from the binary representations of a twin prime pair. 101 (base 2) = 5 (base 10) concatenated with 111 (base 2) = 7 (base 10), with (5,7) the second twin prime pair. [Post]

Submitted: 2009-03-23 23:21:54;   Last Modified: 2009-03-24 20:23:09.
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