67004
670042± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67014
670142 = (12 + 2)(52 + 2)(102 + 2)(122 + 2)(612 + 2) = (22 + 2)(52 + 2)(72 + 2)(122 + 2)(612 + 2).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67032
670322 = (22 - 1)(32 - 1)(202 - 1)(6852 - 1) = (52 - 1)(202 - 1)(6852 - 1)
= (22 + 3)(32 + 3)(42 + 3)(92 + 3)(122 + 3)(152 + 3).
by Yoshio Mimura, Kobe, Japan
67046
670462± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67050
670502 = (62 + 9)(172 + 9)(5792 + 9).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67068
670682± 5 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67081
67081 = 2592, a zigzag square with different digits.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67089
670892 = (52 + 8)(452 + 8)(2592 + 8).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67091
670912 = 26492 + 26502 + 26512 + ... + 31772.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67101
671012± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67158
671582± 5 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67179
671792± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67187
The sum of consecutive primes 2, 3, 5, 7, 11, ..., 67187 is a square 145732.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67200
672002 = (22 - 1)(62 - 1)(92 - 1)(152 - 1)(492 - 1) = (32 - 1)(42 - 1)(72 - 1)(92 - 1)(992 - 1)
= (32 - 1)(52 - 1)(492 - 1)(992 - 1) = (32 - 1)(62 - 1)(92 - 1)(112 - 1)(412 - 1)
= (32 - 1)(62 - 1)(92 - 1)(4492 - 1) = (62 - 1)(92 - 1)(312 - 1)(412 - 1)
= (72 - 1)(92 - 1)(112 - 1)(992 - 1).
by Yoshio Mimura, Kobe, Japan
67215
672152± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67225
56722567225 = 2381652.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67229
672292 = 23792 + 23812 + 23832 + 23852 + ... + 34352.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67232
672322 = (12 + 7)(32 + 7)(392 + 7)(1522 + 7) = (112 + 7)(392 + 7)(1522 + 7).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67240
413 + 67240 = 3692, 413 - 67240 = 412.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67242
672422± 5 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67275
672752 = (22 - 1)(142 - 1)(242 - 1)(1162 - 1).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67280
672802 = (12 + 4)(22 + 4)(52 + 4)(242 + 4)(822 + 4) = (42 + 4)(52 + 4)(342 + 4)(822 + 4)
= (52 + 4)(62 + 4)(242 + 4)(822 + 4) = (242 + 4)(342 + 4)(822 + 4).
by Yoshio Mimura, Kobe, Japan
67284
672842 = (12 + 5)(22 + 5)(32 + 5)(72 + 5)(3332 + 5) = (12 + 5)(72 + 5)(112 + 5)(3332 + 5).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67298
672982± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67320
673202 = (102 - 1)(672 - 1)(1012 - 1).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67338
673382 = (22 + 5)(92 + 5)(342 + 5)(712 + 5) = (92 + 5)(132 + 5)(162 + 5)(342 + 5).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67364
673642± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67410
674102 = (12 + 5)(102 + 5)(402 + 5)(672 + 5) = (42 + 5)(52 + 5)(402 + 5)(672 + 5)
= (252 + 5)(402 + 5)(672 + 5).
by Yoshio Mimura, Kobe, Japan
67416
2652 + 67416 = 3712, 2652 - 67416 = 532.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67419
674192± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67430
674302= 1923 x 1924 + 1924 x 1925 + 1925 x 1926 +...+ 2747 x 2748.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67470
674702 = (22 + 9)(672 + 9)(2792 + 9) = (92 + 9)(672 + 9)(1062 + 9).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67482
674822± 5 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67485
674852 = 4554225225, a sqaure with 3 kinds of digits.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67500
675002 = (12 + 9)(32 + 9)(62 + 9)(92 + 9)(792 + 9) = (32 + 9)(92 + 9)(212 + 9)(792 + 9).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67532
675322± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67563
675632± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67570
675702 = (52 + 4)(242 + 4)(5212 + 4).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67575
675752 = (162 + 9)(462 + 9)(902 + 9).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67600
653 + 67600 = 5852, 653 - 67600 = 4552.
676002 = (12 + 4)(22 + 4)(32 + 4)(62 + 4)(162 + 4)(292 + 4)
= (12 + 4)(22 + 4)(102 + 4)(292 + 4)(362 + 4) = (12 + 4)(32 + 4)(42 + 4)(62 + 4)(102 + 4)(292 + 4)
= (12 + 4)(42 + 4)(142 + 4)(4782 + 4) = (12 + 4)(62 + 4)(102 + 4)(162 + 4)(292 + 4)
= (102 + 4)(142 + 4)(162 + 4)(292 + 4) = (22 + 4)(32 + 4)(62 + 4)(292 + 4)(362 + 4)
= (22 + 4)(32 + 4)(142 + 4)(162 + 4)(292 + 4) = (22 + 4)(42 + 4)(112 + 4)(4782 + 4)
= (32 + 4)(42 + 4)(102 + 4)(142 + 4)(292 + 4) = (32 + 4)(102 + 4)(162 + 4)(1142 + 4)
= (62 + 4)(102 + 4)(292 + 4)(362 + 4).
by Yoshio Mimura, Kobe, Japan
67608
676082± 5 are primes.
676082 = (42 + 8)(532 + 8)(2602 + 8).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67620
676202 = (92 - 1)(222 - 1)(3442 - 1).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67626
676262± 5 are primes.
676262 = (32 + 9)(152 + 9)(10422 + 9).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67628
676282± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67635
676352± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67677
676772 = 4580176329, a square with different digits.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67680
676802 = (22 - 1)(92 - 1)(462 - 1)(952 - 1).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67695
676952± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67704
677042 = (12 + 3)(22 + 3)(32 + 3)(62 + 3)(72 + 3)(822 + 3)
= (12 + 3)(22 + 3)(32 + 3)(452 + 3)(822 + 3) = (12 + 3)(22 + 3)(62 + 3)(92 + 3)(112 + 3)(202 + 3)
= (12 + 3)(32 + 3)(62 + 3)(192 + 3)(822 + 3) = (12 + 3)(52 + 3)(62 + 3)(202 + 3)(512 + 3)
= (12 + 3)(62 + 3)(72 + 3)(92 + 3)(822 + 3) = (12 + 3)(92 + 3)(452 + 3)(822 + 3)
= (12 + 3)(202 + 3)(332 + 3)(512 + 3) = (22 + 3)(32 + 3)(52 + 3)(62 + 3)(112 + 3)(202 + 3)
= (22 + 3)(32 + 3)(72 + 3)(202 + 3)(512 + 3) = (22 + 3)(32 + 3)(112 + 3)(202 + 3)(332 + 3)
= (22 + 3)(62 + 3)(72 + 3)(112 + 3)(512 + 3) = (22 + 3)(112 + 3)(452 + 3)(512 + 3)
= (32 + 3)(52 + 3)(62 + 3)(72 + 3)(822 + 3) = (32 + 3)(52 + 3)(452 + 3)(822 + 3)
= (32 + 3)(192 + 3)(202 + 3)(512 + 3) = (32 + 3)(512 + 3)(3832 + 3)
= (32 + 3)(72 + 3)(112 + 3)(122 + 3)(202 + 3) = (32 + 3)(72 + 3)(202 + 3)(1352 + 3)
= (32 + 3)(72 + 3)(332 + 3)(822 + 3) = (52 + 3)(62 + 3)(92 + 3)(112 + 3)(202 + 3)
= (62 + 3)(72 + 3)(112 + 3)(1352 + 3) = (62 + 3)(112 + 3)(192 + 3)(512 + 3)
= (72 + 3)(92 + 3)(202 + 3)(512 + 3) = (92 + 3)(112 + 3)(202 + 3)(332 + 3)
= (112 + 3)(452 + 3)(1352 + 3).
by Yoshio Mimura, Kobe, Japan
67712
677122 = (12 + 7)(32 + 7)(42 + 7)(192 + 7)(652 + 7) = (42 + 7)(112 + 7)(192 + 7)(652 + 7).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67714
677142± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67716
677162 = (12 + 2)(22 + 2)(32 + 2)(42 + 2)(62 + 2)(132 + 2)(142 + 2)
= (12 + 2)(22 + 2)(32 + 2)(42 + 2)(62 + 2)(1842 + 2)
= (12 + 2)(22 + 2)(42 + 2)(62 + 2)(192 + 2)(322 + 2) = (12 + 2)(22 + 2)(62 + 2)(142 + 2)(1842 + 2)
= (12 + 2)(32 + 2)(42 + 2)(62 + 2)(142 + 2)(322 + 2)
= (12 + 2)(42 + 2)(62 + 2)(82 + 2)(132 + 2)(142 + 2) = (12 + 2)(42 + 2)(62 + 2)(82 + 2)(1842 + 2)
= (22 + 2)(32 + 2)(52 + 2)(62 + 2)(82 + 2)(322 + 2)
= (22 + 2)(42 + 2)(52 + 2)(62 + 2)(82 + 2)(252 + 2) = (22 + 2)(42 + 2)(82 + 2)(252 + 2)(322 + 2)
= (22 + 2)(62 + 2)(82 + 2)(222 + 2)(252 + 2) = (42 + 2)(62 + 2)(142 + 2)(1842 + 2)
= (22 + 2)(62 + 2)(322 + 2)(1402 + 2) = (12 + 8)(22 + 8)(72 + 8)(102 + 8)(832 + 8)
= (12 + 8)(22 + 8)(72 + 8)(172 + 8)(502 + 8) = (12 + 8)(52 + 8)(72 + 8)(102 + 8)(502 + 8)
= (12 + 8)(62 + 8)(72 + 8)(172 + 8)(262 + 8) = (12 + 8)(102 + 8)(172 + 8)(1262 + 8)
= (12 + 8)(102 + 8)(262 + 8)(832 + 8) = (12 + 8)(172 + 8)(262 + 8)(502 + 8)
= (22 + 8)(52 + 8)(72 + 8)(172 + 8)(262 + 8) = (72 + 8)(102 + 8)(172 + 8)(502 + 8).
by Yoshio Mimura, Kobe, Japan
67728
677282 = (32 + 8)(42 + 8)(182 + 8)(1842 + 8) = (182 + 8)(202 + 8)(1842 + 8).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67731
677312± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67804
678042 = (42 + 7)(902 + 7)(1572 + 7).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67850
678502± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67852
678522± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67860
678602 = (12 + 9)(22 + 9)(32 + 9)(112 + 9)(1232 + 9) = (12 + 9)(22 + 9)(72 + 9)(152 + 9)(512 + 9)
= (12 + 9)(32 + 9)(412 + 9)(1232 + 9) = (12 + 9)(72 + 9)(92 + 9)(2972 + 9)
= (12 + 9)(112 + 9)(152 + 9)(1232 + 9) = (22 + 9)(32 + 9)(72 + 9)(112 + 9)(512 + 9)
= (32 + 9)(72 + 9)(412 + 9)(512 + 9) = (72 + 9)(112 + 9)(152 + 9)(512 + 9).
by Yoshio Mimura, Kobe, Japan
67862
678622± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67863
678632± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67900
679002± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67923
679232± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67924
679242± 3 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67936
679362 = (22 + 7)(52 + 7)(36212 + 7).
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67941
679412± 2 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan
67963
679632 = 55522 + 55532 + 55542 + ... + 56972.
Page of Squares : First Upload October 20, 2012 ; Last Revised October 20, 2012by Yoshio Mimura, Kobe, Japan
67986
679862± 5 are primes.
Page of Squares : First Upload March 26, 2014 ; Last Revised March 26, 2014by Yoshio Mimura, Kobe, Japan