20001
200012 = 400040001 is a reversible square (100040004 = 100022).
200012 = 400040001 is a square consisting of 3 kinds of digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20002
200022 = 400080004 is a palindromic square.
200022 = 400080004 is a square consisting of 3 kinds of even digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20010
200102 = (132 + 5)(152 + 5)(1002 + 5).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20011
200112 = 400440121 is a reversible square (121044004 = 110022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20012
200122 = 400480144 is a reverdible square (441084004 = 210022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20021
200212 = 400840441 is a reversible square (144048004 = 120022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20022
200222± 5 are primes.
200222 = 400880484 is a reversible square (484088044 = 220022).
200222 = 400880484 is a square consisting of 3 kinds of even digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20044
200442± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20056
200562± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20064
200642 = (42 + 8)(62 + 8)(122 + 8)(502 + 8).
1852 + 20064 = 2332, 1852 - 20064 = 1192.
Page of Squares : First Upload March 3, 2012 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20079
200792 = 13442 + 13452 + 13462 + ... + 15372.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20089
200892 = 403567921 is a square consisting of different digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20100
201002 = (13 + 9)(53 + 9)(63 + 9)(113 + 9).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20101
201012 = 404050201 is a reversible square (102050404 = 101022).
201012 = 404050201, and 44521 = 2112.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20102
201022 = 404090404 is a palindromic square consisting of 3 kinds of digits.
201022 = 404090404, and 44944 = 2122.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20111
201112 = 404452321 is a reversible square (123254404 = 111022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20112
201122 = 404492544 is a reversible square (445294404 = 211022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20121
201212 = 404854641 is a reversible square (146458404 = 121022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20122
201222 = 404894884 is a reversible square (488498404 = 221022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20124
201242± 5 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20126
201262± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20152
201522 = 34922 + 34932 + 34942 + ... + 35242.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20160
201602 = (112 - 1)(192 - 1)(972 - 1) = (152 - 1)(192 - 1)(712 - 1) = (172 - 1)(292 - 1)(412 - 1)
= (22 - 1)(112 - 1)(152 - 1)(712 - 1) = (22 - 1)(132 - 1)(292 - 1)(312 - 1)
= (22 - 1)(152 - 1)(192 - 1)(412 - 1) = (22 - 1)(32 - 1)(112 - 1)(132 - 1)(292 - 1)
= (22 - 1)(32 - 1)(42 - 1)(112 - 1)(972 - 1) = (22 - 1)(32 - 1)(42 - 1)(152 - 1)(712 - 1)
= (22 - 1)(32 - 1)(42 - 1)(82 - 1)(92 - 1)(152 - 1)
= (22 - 1)(32 - 1)(52 - 1)(62 - 1)(112 - 1)(132 - 1)
= (22 - 1)(32 - 1)(62 - 1)(172 - 1)(412 - 1) = (22 - 1)(42 - 1)(312 - 1)(972 - 1)
= (22 - 1)(42 - 1)(52 - 1)(152 - 1)(412 - 1)
= (22 - 1)(42 - 1)(52 - 1)(62 - 1)(72 - 1)(152 - 1)
= (22 - 1)(42 - 1)(72 - 1)(152 - 1)(292 - 1) = (22 - 1)(52 - 1)(62 - 1)(132 - 1)(312 - 1)
= (22 - 1)(62 - 1)(72 - 1)(152 - 1)(192 - 1) = (22 - 1)(62 - 1)(92 - 1)(132 - 1)(172 - 1)
= (22 - 1)(72 - 1)(172 - 1)(992 - 1) = (22 - 1)(82 - 1)(92 - 1)(112 - 1)(152 - 1)
= (32 - 1)(132 - 1)(192 - 1)(292 - 1) = (32 - 1)(42 - 1)(192 - 1)(972 - 1)
= (32 - 1)(42 - 1)(52 - 1)(132 - 1)(292 - 1) = (32 - 1)(52 - 1)(62 - 1)(132 - 1)(192 - 1)
= (32 - 1)(52 - 1)(62 - 1)(82 - 1)(312 - 1) = (32 - 1)(62 - 1)(172 - 1)(712 - 1)
= (32 - 1)(62 - 1)(82 - 1)(92 - 1)(172 - 1) = (32 - 1)(82 - 1)(292 - 1)(312 - 1)
= (42 - 1)(412 - 1)(1272 - 1) = (42 - 1)(52 - 1)(112 - 1)(972 - 1)
= (42 - 1)(52 - 1)(152 - 1)(712 - 1) = (42 - 1)(52 - 1)(82 - 1)(92 - 1)(152 - 1)
= (42 - 1)(62 - 1)(72 - 1)(1272 - 1) = (52 - 1)(112 - 1)(132 - 1)(292 - 1)
= (52 - 1)(62 - 1)(172 - 1)(412 - 1) = (62 - 1)(72 - 1)(172 - 1)(292 - 1)
= (62 - 1)(72 - 1)(92 - 1)(552 - 1) = (72 - 1)(412 - 1)(712 - 1)
= (72 - 1)(82 - 1)(92 - 1)(412 - 1) = (82 - 1)(92 - 1)(152 - 1)(192 - 1)
= (92 - 1)(412 - 1)(552 - 1).
by Yoshio Mimura, Kobe, Japan
20164
20164 is a square (1422) consisting of different digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20178
201782 = (12 + 2)(22 + 2)(47562 + 2) = (12 + 2)(62 + 2)(232 + 2)(822 + 2) = (42 + 2)(47562 + 2).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20184
1452 + 20184 = 2032, 1452 - 20184 = 292.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20196
201962 = (12 + 2)(22 + 2)(32 + 2)(42 + 2)(142 + 2)(242 + 2)
= (12 + 2)(22 + 2)(82 + 2)(102 + 2)(582 + 2) = (12 + 2)(42 + 2)(82 + 2)(142 + 2)(242 + 2)
= (12 + 8)(22 + 8)(32 + 8)(52 + 8)(822 + 8) = (12 + 8)(22 + 8)(32 + 8)(62 + 8)(712 + 8)
= (12 + 8)(32 + 8)(62 + 8)(142 + 8)(172 + 8) = (12 + 8)(52 + 8)(142 + 8)(822 + 8)
= (12 + 8)(62 + 8)(142 + 8)(712 + 8) = (142 + 8)(14142 + 8) = (142 + 8)(172 + 8)(822 + 8)
= (142 + 8)(372 + 8)(382 + 8) = (22 + 2)(102 + 2)(142 + 2)(582 + 2)
= (22 + 2)(32 + 2)(42 + 2)(102 + 2)(582 + 2) = (22 + 2)(32 + 2)(42 + 2)(72 + 2)(82 + 2)(102 + 2)
= (22 + 2)(72 + 2)(82 + 2)(102 + 2)(142 + 2) = (22 + 8)(32 + 8)(14142 + 8)
= (22 + 8)(32 + 8)(172 + 8)(822 + 8) = (22 + 8)(32 + 8)(372 + 8)(382 + 8)
= (22 + 8)(32 + 8)(52 + 8)(142 + 8)(172 + 8) = (22 + 8)(32 + 8)(52 + 8)(62 + 8)(372 + 8)
= (22 + 8)(52 + 8)(142 + 8)(712 + 8) = (22 + 8)(712 + 8)(822 + 8)
= (32 + 8)(52 + 8)(102 + 8)(822 + 8) = (32 + 8)(62 + 8)(102 + 8)(712 + 8) = (382 + 8)(5302 + 8)
= (42 + 2)(82 + 2)(102 + 2)(582 + 2) = (52 + 8)(62 + 8)(142 + 8)(372 + 8)
= (52 + 8)(62 + 8)(5302 + 8) = (62 + 8)(372 + 8)(822 + 8).
by Yoshio Mimura, Kobe, Japan
20201
202012 = 408080401 is a reversible square (104080804 = 102022).
202012 = 408080401, and 48841 = 2212.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20202
202022 = (22 + 3)(62 + 3)(212 + 3)(582 + 3) = (32 + 3)(62 + 3)(162 + 3)(582 + 3)
= (62 + 3)(162 + 3)(2012 + 3).
by Yoshio Mimura, Kobe, Japan
20211
202112 = 408484521 is a reversible square (125484804 = 112022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20213
202132 = S2(753) + S2(927), where S2(n) = 12 + 22 + ... + n2.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20221
202212 = 408888841 is a reversible square (148888804 = 122022).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20230
202302± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20240
202402 = 409657600, and 4096 = 642, 57600 = 2402.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20264
202642± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20280
134 + 20280 = 2212, 134 - 20280 = 912.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20286
202862 = (12 + 5)(82 + 5)(312 + 5)(322 + 5) = (12 + 5)(82 + 5)(9972 + 5)
= (172 + 5)(312 + 5)(382 + 5) = (32 + 5)(322 + 5)(1692 + 5) = (32 + 5)(42 + 5)(312 + 5)(382 + 5)
= (32 + 5)(82 + 5)(172 + 5)(382 + 5) = (42 + 5)(82 + 5)(172 + 5)(312 + 5).
by Yoshio Mimura, Kobe, Japan
20295
202952± 2 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20300
203002 = (22 + 6)(82 + 6)(202 + 6)(382 + 6).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20308
203082± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20314
203142± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20316
203162 = 412739856 is a square consisting of different digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20318
203182± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20320
203202= 50 x 51 + 51 x 52 + 52 x 53 + ... + 1073 x 1074.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20329
203292 = (52 + 4)(37752 + 4).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20342
203422± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20343
12 + 22 + ... + 203432 = 2806440020084, which consists of even digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20359
203592 = 414488881 is a square consisting of 3 kinds of digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20370
203702 = (12 + 6)(62 + 6)(11882 + 6) = (22 + 6)(242 + 6)(2672 + 6) = (32 + 6)(242 + 6)(2182 + 6).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20385
203852± 2 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20410
204102 = (32 + 4)(562 + 4)(1012 + 4).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20412
204122 = (12 + 5)(22 + 5)(32 + 5)(72 + 5)(1012 + 5) = (12 + 5)(72 + 5)(112 + 5)(1012 + 5).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20416
204162 = (132 + 7)(152 + 7)(1012 + 7) = (152 + 7)(312 + 7)(432 + 7)
= (22 + 7)(32 + 7)(152 + 7)(1012 + 7) = (22 + 7)(92 + 7)(152 + 7)(432 + 7).
by Yoshio Mimura, Kobe, Japan
20433
204332± 2 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20475
204752 = (42 - 1)(62 - 1)(142 - 1)(642 - 1).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20484
204842± 5 are primes.
204842 = 53 + 913 + 2863 + 7343.
Page of Squares : First Upload March 3, 2012 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20496
204962± 5 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20500
205002 = 420250000, and 4 = 22, 20250000 = 45002.
205002 = (12 + 1)(22 + 1)(32 + 1)(72 + 1)(92 + 1)(322 + 1).
Page of Squares : First Upload March 3, 2012 ; Last Revised November 9, 2013by Yoshio Mimura, Kobe, Japan
20502
205022 = (102 + 2)(20302 + 2).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20508
205082 = 420578064 is a reversible square (460875024 = 214682).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20513
205132 = 420783169 is a sqaure consisting of different digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20521
205212 = 421111441 is a square consisting of 3 kinds of digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20528
205282± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20556
205562 = (12 + 8)(22 + 8)(19782 + 8) = (102 + 8)(19782 + 8).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20558
205582± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20580
205802 = (22 + 6)(62 + 6)(82 + 6)(1202 + 6).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20587
(205872 - 7) = (32 - 7)(42 - 7)(1422 - 7)(182 - 7)(202 - 7).
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20592
205922 = (72 - 1)(102 - 1)(122 - 1)(252 - 1).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20602
206022 = 424442404 is a square consisting of 3 kind of even digits.
206022 = 424442404 is a square pegged by 4.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20608
206082 = (12 + 7)(42 + 7)(72 + 7)(2032 + 7)
= (42 + 7)(212 + 7)(2032 + 7) = (42 + 7)(72 + 7)(212 + 7)(272 + 7).
by Yoshio Mimura, Kobe, Japan
20632
206322± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20670
206702 = (22 + 9)(92 + 9)(162 + 9)(372 + 9).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20678
206782± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20691
206912 = (12 + 8)(52 + 8)(72 + 8)(1592 + 8) = (32 + 2)(132 + 2)(192 + 2)(252 + 2)
= (32 + 2)(52 + 2)(192 + 2)(632 + 2) = (72 + 8)(172 + 8)(1592 + 8).
by Yoshio Mimura, Kobe, Japan
20712
207122± 5 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20718
207182 = 63 + 93 + 123 + 833 + 7543.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20724
207242 = S2(851) + S2(875), where S2(n) = 12 + 22 + ... + n2.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20736
207362± 5 are primes.
20736 = 1442 is a zigzag square consisting of different digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20744
207442 = 430313536 is a square pegged by 3.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20748
207482 = (12 + 3)(32 + 3)(42 + 3)(62 + 3)(1102 + 3) = (12 + 3)(42 + 3)(332 + 3)(722 + 3)
= (12 + 3)(42 + 3)(52 + 3)(62 + 3)(722 + 3) = (12 + 3)(62 + 3)(122 + 3)(1372 + 3)
= (12 + 3)(62 + 3)(152 + 3)(1102 + 3) = (12 + 3)(62 + 3)(232 + 3)(722 + 3)
= (152 + 3)(192 + 3)(722 + 3) = (22 + 3)(32 + 3)(42 + 3)(72 + 3)(722 + 3)
= (22 + 3)(42 + 3)(62 + 3)(152 + 3)(192 + 3) = (22 + 3)(62 + 3)(92 + 3)(1372 + 3)
= (22 + 3)(72 + 3)(152 + 3)(722 + 3) = (32 + 3)(42 + 3)(192 + 3)(722 + 3)
= (42 + 3)(62 + 3)(232 + 3)(332 + 3) = (42 + 3)(72 + 3)(92 + 3)(722 + 3).
by Yoshio Mimura, Kobe, Japan
20754
207542 = 430728516 is a square consisting of different digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20758
207582± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20771
207712 = 431434441 is a square consisting of 3 kinds of digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20798
207982± 3 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20800
208002 = (12 + 4)(22 + 4)(32 + 4)(62 + 4)(102 + 4)(142 + 4) = (22 + 4)(62 + 4)(102 + 4)(1142 + 4).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20826
208262 = (132 + 9)(152 + 9)(1022 + 9) = (22 + 9)(32 + 9)(132 + 9)(1022 + 9).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20832
208322 = (12 + 3)(32 + 3)(52 + 3)(112 + 3)(512 + 3).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20838
208382 = 434222244 is a square consisting of 3 kinds of digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20898
208982 = (12 + 2)(22 + 2)(52 + 2)(162 + 2)(592 + 2) = (162 + 2)(222 + 2)(592 + 2)
= (42 + 2)(52 + 2)(162 + 2)(592 + 2).
by Yoshio Mimura, Kobe, Japan
20904
209042 = (12 + 3)(32 + 3)(62 + 3)(82 + 3)(592 + 3).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20905
209052 = (12 + 4)(93492 + 4).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20910
209102 = (12 + 9)(52 + 9)(11342 + 9).
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20930
209302 = 10262 + 10272 + 10282 + ... + 13372.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan
20973
209732± 2 are primes.
Page of Squares : First Upload February 8, 2014 ; Last Revised February 8, 2014by Yoshio Mimura, Kobe, Japan
20992
209922 = 440664064 is a square consisting of 3 kinds of even digits.
Page of Squares : First Upload March 3, 2012 ; Last Revised March 3, 2012by Yoshio Mimura, Kobe, Japan