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400000

4000004000001 = 2000001².

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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401956

401956 = 634², a square with different digits.

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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402400

185³ + 402400 = 2595², 185³ - 402400 = 2435².

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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403100

5⁹ + 403100 = 1535², 5⁹ - 403100 = 1245².

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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403368

403368² = (1³ + 2³ + 3³ + ... + 48³) * (49³).

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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403788

A cubic polynomial:
(X + 196²)(X + 528²)(X + 693²) = X³ + 893²X² + 403788²X + 71717184²,
(X + 209²)(X + 528²)(X + 684²) = X³ + 889²X² + 403788²X + 75480768².

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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405769

405769 = 637², a square with different digits.

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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407044

407044 = 638², a square with 3 kinds of digits.

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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408321

408321 = 639², a square with different digits.

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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409600

80³ + 409600 = 960², 80³ - 409600 = 320².

Page of Squares : First Upload May 11, 2013 ; Last Revised May 11, 2013
by Yoshio Mimura, Kobe, Japan

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