Problem of the Week

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Sum of Squares in Two Ways

Posted: January 12, 2026

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Every positive integer can be written as the sum of 4 squares. Some integers can be written as the sum of 2 squares. An even smaller set can be written as the sum of 2 squares in 2 (or more ways). Find the greatest number between 300 and 399 that can be written as the sum of 2 squares in 2 or more ways.

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