280238
2802382 = 17154 * 17155 + 17156 * 17157 + 17158 * 17159 + ... + 17670 * 17671.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
280859
2808592 = 78881777881, a square with 3 kinds of even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
281346
2813462 = 79155571716, a square with odd digits except the last digit 6.
Page of Squares : First Upload September 21, 2013 ; Last Revised September 21, 2013by Yoshio Mimura, Kobe, Japan
281666
2816662 = 79335735556, a square with odd digits except the last digit 6.
Page of Squares : First Upload September 21, 2013 ; Last Revised September 21, 2013by Yoshio Mimura, Kobe, Japan
282001
2820012 = 79524564001, and 79524 = 2822, 564001 = 7512.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
282124
2821242 = 79593951376, a square with odd digits except the last digit 6.
Page of Squares : First Upload September 21, 2013 ; Last Revised September 21, 2013by Yoshio Mimura, Kobe, Japan
282134
2821342 = 79599593956, a square with odd digits except the last digit 6.
Page of Squares : First Upload September 21, 2013 ; Last Revised September 21, 2013by Yoshio Mimura, Kobe, Japan
282170
2821702 = 1097 * 1098 + 1099 * 1100 + 1101 * 1102 + 1103 * 1104 + ... + 7823 * 7824.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
283338
2833382 = 80280422244, a square with even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
283500
2835002 = (13 + ... + 53)*(63 + ... + 143)*(153 + ... + 203).
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
283592
2835922 = 80424422464, a square with even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
283702
2837022 = 80486824804, a square with even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
284262
2842622 = 80804884644, a square with even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
284332
2843322 = 80844686224, a square with even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
284398
2843982 = 80882222404, a square with even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
284625
2846252 = 81011390625, and 81 = 92, 11390625 = 33752.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
285726
12 + 22 + 32 + ... + 2857262 = 7775535513933551, a sum with odd digits (the unique 16-digit sum).
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
286441
The quadratic polynomial 286441X2 - 1424520X + 1717200 takes the values 7612, 1182, 1472, 7762, 13252, 18662 at X = 1, 2,..., 6.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
286582
2865822 = 82129242724, a square pegged by 2.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
288372
A cubic polynomial:
(X + 362)(X + 4272)(X + 6722) = X3 + 7972X2 + 2883722X + 103299842.
by Yoshio Mimura, Kobe, Japan
289511
The Legendre Symbol (a/289511) = 1 for a = 1,2,...,30 (the third prime).
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
289838
2898382 = 84006066244, a square with even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan
289908
2899082 = 84046648464, a square with even digits.
Page of Squares : First Upload April 13, 2013 ; Last Revised April 13, 2013by Yoshio Mimura, Kobe, Japan