390

This number is a composite.

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The prime factorization of 390 (2 x 3 x 5 x 13) exhibits the smallest digital sum, [2 + 3 + 5 + (1 + 3)] = 14, of any factorization with four primes with distinct digital sums (2, 3, 5, and 4). [Doyle]

Submitted: 2006-07-25 19:53:14; Last Modified: 2008-01-30 17:28:00.