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680884

680884² = 1800*1801 + 1802*1803 + 1804*1805 + 1806*1807 + ... + 14072*14073.

Page of Squares : First Upload June 22, 2013 ; Last Revised June 22, 2013
by Yoshio Mimura, Kobe, Japan

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682281

682281 = 6² + 822² + 81².

Page of Squares : First Upload June 22, 2013 ; Last Revised June 22, 2013
by Yoshio Mimura, Kobe, Japan

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682344

90³ + 682344 = 1188², 90³ - 682344 = 216².

Page of Squares : First Upload June 22, 2013 ; Last Revised June 22, 2013
by Yoshio Mimura, Kobe, Japan

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682908

682908² = 466363336464, a square with 3 kinds of digits.

Page of Squares : First Upload June 22, 2013 ; Last Revised June 22, 2013
by Yoshio Mimura, Kobe, Japan

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684475

684475² = 468506025625, and 468506025 = 21645², 625 = 25².

Page of Squares : First Upload June 22, 2013 ; Last Revised June 22, 2013
by Yoshio Mimura, Kobe, Japan

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687241

687241 = 829², a square with different digits.

Page of Squares : First Upload June 22, 2013 ; Last Revised June 22, 2013
by Yoshio Mimura, Kobe, Japan

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687500

5⁹ + 687500 = 1625², 5⁹ - 687500 = 1125².

Page of Squares : First Upload June 22, 2013 ; Last Revised June 22, 2013
by Yoshio Mimura, Kobe, Japan

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688086

688086² = 381*382*383 + 383*384*385 + 385*386*387 + 387*388*389 + ... + 1395*1396*1397.

Page of Squares : First Upload October 26, 2013 ; Last Revised October 26, 2013
by Yoshio Mimura, Kobe, Japan

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