51

This number is a composite.

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51 = 2 + 3 + 5 + 41 . It's the smallest number which can be written with all the digits from 1 to 5 (without repetition) as a sum of primes. Note that the highest digit (5) and the lowest digit (1) are the digits of 51. [Capelle]

Submitted: 2003-07-06 12:40:37; Last Modified: 2008-01-30 17:28:00.