477
This number is a composite.
477 = 89 + 83 + 67 + 61 + 53 + 47 + 41 + 29 + 5 + 2 . It's the smallest number which is sum of different primes by using twice all the digits greater than zero. [Capelle]
(There are 3 curios for this number that have not yet been approved by an editor.)
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