91521...18587 (41-digits)

This number is a prime.

                               9 1521252733 3539454951 5557636569 7577818587

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The smallest prime which is formed by concatenating successive terms in the sequence of odd composite numbers. [Hartley]

Submitted: 2003-03-24 03:00:12;   Last Modified: 2008-01-30 11:28:00.
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