200001
2000012 = 40000400001, a square consisting of three digits,
and a reversible square (10000400004 = 1000022).
by Yoshio Mimura, Kobe, Japan
200002
2000022 = 40000800004, a palindromic square consisting of three even digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200011
2000112 = 40004400121, a reversible square (12100440004 = 1100022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200012
2000122 = 40004800144, a reversible square (44100840004 = 2100022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200021
2000212 = 40008400441, a reversible square (14400480004 = 1200022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200022
2000222 = 40008800484, a square consisting of three even digits,
and a reversible square (48400880004 = 2200022).
by Yoshio Mimura, Kobe, Japan
200096
653 + 200096 = 6892, 653 - 200096 = 2732.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200101
2001012 = 40040410201, a reversible square (10201404004 = 1010022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200102
2001022 = 40040810404, a reversible square (40401804004 = 2010022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200111
2001112 = 40044412321, a reversible square (12321444004 = 1110022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200112
2001122 = 40044812544, a reversible square (44521844004 = 2110022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200121
2001212 = 40048414641, a reversible square (14641484004 = 1210022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200122
2001222 = 40048814884, a reversible square (48841884004 = 2210022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200162
2001622 = 40064826244, a square consisting of even digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200201
2002012 = 40080440401, a reversible square (10404408004 = 1020022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200202
2002022 = 40080840804, a square consisting of three even digits,
and a reversible square (40804808004 = 2020022).
by Yoshio Mimura, Kobe, Japan
200211
2002112 = 40084444521, a reversible square (12544448004 = 1120022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200212
2002122 = 40084844944, a reversible square (44944848004 = 2120022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200221
2002212 = 40088448841, a reversible square (14884488004 = 1220022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
200830
2008302 = 9377 * 9378 + 9379 * 9380 + 9381 * 9382 + 9383 * 9384 + ... + 10215 * 10216.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201001
2010012 = 40401402001, a reversible square (10020410404 = 1001022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201002
2010022 = 40401804004, a reversible square (40040810404 = 2001022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201011
2010112 = 40405422121, a reversible square (12122450404 = 1101022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201012
2010122 = 40405824144, a reversible square (44142850404 = 2101022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201021
2010212 = 40409442441, a reversible square (14424490404 = 1201022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201022
2010222 = 40409844484, a reversible square (48444890404 = 2201022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201101
2011012 = 40445634321, a reversible square (12343654404 = 1011022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201111
2011112 = 40445634321, a reversible square (12343654404 = 1111022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201121
2011212 = 40441612201, a reversible square (10221614404 = 1211022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201201
2012012 = 40481842401, a reversible square (10424818404 = 1021022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201202
2012022 = 40482244804, a square consisting of even digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201211
2012112 = 40485866521, a reversible square (12566858404 = 1121022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
201320
2013202 = 3348 * 3349 + 3350 * 3351 + 3352 * 3353 + 3354 * 3355 + ... + 6546 * 6547.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
202001
2020012 = 40804404001, a reversible square (10040440804 = 1002022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
202002
2020022 = 40804808004, a square consisting of three even digits,
and a reversible square (40080840804 = 2002022).
by Yoshio Mimura, Kobe, Japan
202011
2020112 = 40808444121, a reversible square (12144480804 = 1102022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
202012
2020122 = 40808848144, a reversible square (44184880804 = 2102022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
202101
2021012 = 40844814201, a reversible square (10241844804 = 1012022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
202111
2021112 = 40848856321, a reversible square (12365884804 = 1112022).
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
202440
2024402 = 844*845*846 + 846*847*848 + 848*849*850 + 850*851*852 + ... + 954*955*956.
Page of Squares : First Upload October 26, 2013 ; Last Revised October 26, 2013by Yoshio Mimura, Kobe, Japan
202510
2025102 = 2822 * 2823 + 2824 * 2825 + 2826 * 2827 + 2828 * 2829 + ... + 6450 * 6451.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
202512
2025122 = 41011110144, a square consisting of 3 kinds of digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
203112
2031122 = 8373 + 8383 + 8393 + 8403 + ... + 8993.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
203520
The quadratic polynomial 203520X2 - 1092360X + 1797049 takes the values 9532, 6532, 5932, 8272, 11932, 16032 at X = 1, 2,..., 6.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
203768
12 + 22 + 32 + 42 + ... + 2037682 = 2820264824666484, a sum consisting of even digits (the third 16-digit sum, and there are 5 16-digit sums in all.)
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
204020
1013 + 204020 = 11112, 1013 - 204020 = 9092.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
204460
The quadratic polynomial 204460X2 - 1331460X + 2442609 takes the values 11472, 7732, 5372, 6232, 9472, 13472 at X = 1, 2,..., 6.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
205008
2050082 = 42028280064, a square consisting of even digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
205622
2056222 = 42280206884, a square consisting of even digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
205729
2057292 = 42324421441, a square every digit of which is non-zero and smaller than 5.
Page of Squares : First Upload September 21, 2013 ; Last Revised September 21, 2013by Yoshio Mimura, Kobe, Japan
206068
2060682 = 42464020624, a square consisting of even digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
206125
2061252 = 42487515625, and 4 = 22, 2487515625 = 49875.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
206385
The quadratic polynomial 206385X2 - 817140X + 962404 takes the values 5932, 3922, 6072, 9982, 14272, 18682 at X = 1, 2,..., 6.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
206408
2064082 = 42604262464, a square consisting of even digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
206710
2067102 = 9664 * 9665 + 9666 * 9667 + 9668 * 9669 + 9670 * 9671 + ... + 10502 * 10503.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
207921
2079212 = 43231142241, a square every digit of which is non-zero and smaller than 5.
Page of Squares : First Upload September 21, 2013 ; Last Revised September 21, 2013by Yoshio Mimura, Kobe, Japan
207936
207936 = 4562, a square with different digits.
2079362 = - 14 - 24 + 34 + 4564 + 74 + 84 - 94
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
208139
2081392 = 43321843321.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
208140
The quadratic polynomial 208140X2 - 1032900X + 1235641 takes the values 6412, 492, 1012, 6592, 11292, 15912 at X = 1, 2,..., 6.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
208188
2081882 = 43342243344, a square consisting of 3 kinds of digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
208332
2083322 = 43402222224, a square contains repeating digits.
Page of Squares : First Upload September 21, 2013 ; Last Revised September 21, 2013by Yoshio Mimura, Kobe, Japan
208725
2087252 = 43566125625, and 4356 = 662, 6125625 = 24752.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
209338
2093382 = 2059 * 2060 + 2061 * 2062 + 2063 * 2064 + 2065 * 2066 + ... + 6475 * 6476.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
209400
1453 + 209400 = 18052, 1453 - 209400 = 16852.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
209764
209764 = 4582, a square with different digits.
Page of Squares : First Upload March 9, 2013 ; Last Revised March 9, 2013by Yoshio Mimura, Kobe, Japan
209802
2098022 = 187*188*189 + 189*190*191 + 191*192*193 + 193*194*195 + ... + 769*770*771.
Page of Squares : First Upload October 26, 2013 ; Last Revised October 26, 2013by Yoshio Mimura, Kobe, Japan