10739

This number is a prime.

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The smallest prime number that can be represented in four different ways as the sum of the squares of three prime numbers: 10739 = (3*3+11*11+103*103) = (3*3+23*23+101*101) = (3*3+53*53+89*89) = (3*3+67*67*79*79). [Goelz]