14

This number is a composite.

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The concatenation of 14, the 1st and the 4th primes, is a prime whose sum of digits is 14. Note that the product of the 1st and the 4th primes is 14. [Silva]

Submitted: 2009-05-03 20:32:55;   Last Modified: 2009-05-13 20:29:03.
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