1000

This number is a composite.

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Smallest number that generates three primes in the fastest way possible by concatenation of decremented numbers (1000999, 1000999998997, and 1000999998997996995994993 are prime). Note that the criterion excludes counting the number itself. [Merickel]

Submitted: 2010-02-06 21:26:56;   Last Modified: 2010-02-07 14:43:24.
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