Prime Curios!: 5

5
(another Prime Pages' Curiosity)

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If you sum squares like 0^2 + 1^2 = 1, 0^2 + 1^2 + 2^2 = 5, 0^2 + 1^2 + 2^2 + 3^2 = 14, etc., it can be proven that the only prime you ever get for a sum is 5. [Burns]

Submitted: 2008-07-13 00:00:29; Last Modified: 2008-07-17 12:59:27.