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Details of Palindromic Squares
rood Squares upto length 31 rood Squares from length 32
rood Palindromic Squares rood The Subsets rood comments



Legend

F_ba  Decomposition of the basenumber in its prime factors.
Date  Date of discovery by the author.
blue     Hypertext links to related topics in number theory 
Comm  Comments about the palindromic square number.


Factorizations


back [p9]
F_ba  1373512530649258635292477609 =
      31  x  548501  x  80778076662386102939
Date  January 31, 2008 (Feng Yuan)

back [p8]
F_ba  122063831551139898460740721 =
      7  x  1345027  x  12964565188350430189
Date  January 15, 2008 (Feng Yuan)

back [p7]
F_ba  64897400105515621177314682 =
      2  x  11  x  11  x  53  x  173  x  29247581504654842709
Date  May 20, 2001 (Pete Leadbetter)

back [p6]
F_ba  4275548277509699161443659 =
      11  x  14591  x  26638764104333924159
Date  January 8, 2008 (Feng Yuan)

back [p5]
F_ba  2198834453254769178871872 =
      2  x  2  x  2  x  2  x  2  x  2  x  3  x  19  x  602750672493083656489
Date  January 2, 2008 (Feng Yuan)

back [p4]
F_ba  2107561207005423534632462 =
      2  x  13  x  81060046423285520562787
Date  January 2, 2008 (Feng Yuan)

back [p3]
F_ba  831775153121251039203514 =
      2  x  11  x  37807961505511410872887
Date  January 13, 1998 (Mike Bennett)

back [p2]
F_ba  722956456358957313434535 =
      3  x  5  x  11  x  241  x  2753  x  695581  x  9494174983
Date  May 14, 2002 (Hidenori Takahashi)

back [p1]
F_ba  136569391518194940977041 =
      16411  x  145759  x  431659  x  132264151
Date  January 1, 2008 (Feng Yuan)

back [1939]
F_ba  25886574803023261617726 =
      2  x  3  x  3  x  3  x  1427  x  1039081  x  323301302087
Date  April 19, 2002 (Feng Yuan)

back [1938]
F_ba  25145697104636357696394 =
      2  x  3  x  4190949517439392949399
Date  April 19, 2002 (Feng Yuan)

back [1937]
F_ba  20706193716777033766268 =
      2  x  2  x  11  x  8681  x  159006247  x  340928771
Date  April 19, 2002 (Feng Yuan)

back [1934]
F_ba  12093315807217013334121 =
      13  x  31  x  43  x  197  x  40327871  x  87841627
Date  April 19, 2002 (Feng Yuan)

back [1917]
F_ba  11100000000910000000111 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [1864]
F_ba  11000010000910001000011 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [1841]
F_ba  11000000000910000000011 =
      7  x  13  x  59  x  2048798659137642019
Date  April, 2002 (Feng Yuan)

back [1811]
F_ba  10101000009901000010101 =
      9901  x  19926917  x  51197080853
Date  April, 2002 (Feng Yuan)

back [1768]
F_ba  10100000010911000000101 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [1765]
F_ba  10100000009901000000101 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [1729]
F_ba  10010010099900101001001 =
      97  x  1601  x  12433  x  24049  x  215575049
Date  April, 2002 (Feng Yuan)

back [1720]
F_ba  10010001099900110001001 =
      32325907  x  309658785441043
Date  April, 2002 (Feng Yuan)

back [1707]
F_ba  10010000099900100001001 =
      277  x  1499  x  71633  x  336542208239
Date  April, 2002 (Feng Yuan)

back [1673]
F_ba  10001001099900110010001 =
      1092397  x  9155097551439733
Date  April, 2002 (Feng Yuan)

back [1670]
F_ba  10001001009901010010001 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [1665]
F_ba  10001000999900010010001 =
      7  x  13  x  79  x  577  x  2266183  x  1063908299
Date  April, 2002 (Feng Yuan)

back [1645]
F_ba  10000110099900101100001 =
      617  x  8111  x  98737  x  20237892679
Date  April, 2002 (Feng Yuan)

back [1640]
F_ba  10000110000910001100001 =
      263  x  2011  x  18907624039096757
Date  April, 2002 (Feng Yuan)

back [1637]
F_ba  10000109999900001100001 =
      83  x  193  x  421  x  1399  x  352771  x  3004531
Date  April, 2002 (Feng Yuan)

back [1555]
F_ba  3823177109095314778621 =
      11  x  167  x  174392527  x  11934037279
Date  June 27, 1997 (Pete Leadbetter)

back [1554]
F_ba  3036233455854775865623 =
      11  x  191  x  80621  x  17925072804263
Date  March 31, 2002 (Feng Yuan)

back [1553]
F_ba  2211007906320264673878 =
      2  x  3  x  402012869  x  916640600677
Date  March 31, 2002 (Feng Yuan)

back [1552]
F_ba  2016192509426760663598 =
      2  x  41  x  101  x  103  x  2363521438969013
Date  March 31, 2002 (Feng Yuan)

back [1550]
F_ba  1121621184033823231539 =
      3  x  11  x  37  x  719  x  1277619844690361
Date  March 30, 2002 (Feng Yuan)

back [1373]
F_ba  637323988797048057098 =
      2  x  11  x  23  x  73  x  127  x  137  x  359  x  587  x  1621  x  2903
Date  December 5, 1997 (Mike Bennett)

back [1372]
F_ba  263397138410176890086 =
      2  x  11  x  941  x  1865411  x  6820625663
Date  March 30, 2002 (Feng Yuan)

back [1371]
F_ba  260088804053044407026 =
      2  x  131  x  18713  x  53048969111371
Date  March 30, 2002 (Feng Yuan)

back [1370]
F_ba  229359782235085482225 =
      3  x  5  x  5  x  7  x  31  x  11173  x  1261323454543
Date  March 30, 2002 (Feng Yuan)

back [1367]
F_ba  128501150236577373669 =
      3  x  23  x  6653  x  279924171152117
Date  March 30, 2002 (Feng Yuan)

back [1352]
F_ba  111000000091000000111 =
      503  x  2417  x  3423311  x  26670551
Date  April, 2002 (Feng Yuan)

back [1315]
F_ba  110001000091000100011 =
      9901  x  11110089899101111
Date  April, 2002 (Feng Yuan)

back [1292]
F_ba  110000000091000000011 =
      46567  x  18739103  x  126056611
Date  April, 2002 (Feng Yuan)

back [1266]
F_ba  101010000990100010101 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [1255]
F_ba  101001000990100100101 =
      19  x  89  x  7621  x  7837365643091
Date  April, 2002 (Feng Yuan)

back [1246]
F_ba  101000100990101000101 =
      453299023  x  222811203787
Date  April, 2002 (Feng Yuan)

back [1233]
F_ba  101000001091100000101 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [1230]
F_ba  101000000990100000101 =
      163  x  9901  x  62582760116627
Date  April, 2002 (Feng Yuan)

back [1208]
F_ba  100101009990010101001 =
      23  x  101929  x  42698523733703
Date  April, 2002 (Feng Yuan)

back [1199]
F_ba  100100109990011001001 =
      709  x  141184922411863189
Date  April, 2002 (Feng Yuan)

back [1186]
F_ba  100100009990010001001 =
      1283  x  128521  x  607062447307
Date  April, 2002 (Feng Yuan)

back [1174]
F_ba  100011099990001110001 =
      7  x  13  x  9649  x  113900204872339
Date  April, 2002 (Feng Yuan)

back [1163]
F_ba  100010109990011010001 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [1160]
F_ba  100010100990101010001 =
      12071  x  82859831  x  99990001
Date  April, 2002 (Feng Yuan)

back [1155]
F_ba  100010099990001010001 =
      3766409  x  26553170404489
Date  April, 2002 (Feng Yuan)

back [1081]
F_ba  25686162978506292366 =
      2  x  3  x  3  x  13  x  19  x  67  x  5101  x  10067  x  1679189
Date  February 2, 1998 (Mike Bennett)

back [949]
F_ba  2282211769458230805 =
      3  x  5  x  13  x  11868481  x  986111879
Date  February 14, 2001 (William Rex Marshall)

back [946]
F_ba  1363859210193543291 =
      3  x  257  x  1768948391950121
Date  February 9, 1998 (Mike Bennett)

back [933]
F_ba  1110000009100000111 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [902]
F_ba  1100010009100100011 =
      19  x  23  x  43  x  58539194779421
Date  April, 2002 (Feng Yuan)

back [887]
F_ba  1100000009100000011 =
      2878391  x  382157951821
Date  April, 2002 (Feng Yuan)

back [865]
F_ba  1010100099010010101 =
      PRIME
Date  April, 2002 (Feng Yuan)

back [844]
F_ba  1010000109110000101 =
      17  x  257  x  9901  x  14461  x  1614589
Date  April, 2002 (Feng Yuan)

back [841]
F_ba  1010000099010000101 =
      79  x  5417  x  221077  x  10675591
Date  April, 2002 (Feng Yuan)

back [811]
F_ba  1001000999001001001 =
      151  x  23293  x  284598192107
Date  April, 2002 (Feng Yuan)

back [797]
F_ba  1000110099010110001 =
      209687  x  4769537925623
Date  April, 2002 (Feng Yuan)

back [794]
F_ba  1000110009100110001 =
      114761  x  8714720236841
Date  April, 2002 (Feng Yuan)

back [791]
F_ba  1000109999000110001 =
      67  x  14927014910449403
Date  April, 2002 (Feng Yuan)

back [740]
F_ba  795559265009384106 =
      2  x  3  x  7  x  11  x  17  x  101  x  3511  x  285646849
Date  April 29, 1997 (Graham Lyons)

back [739]
F_ba  633856150760638652 =
      2  x  2  x  7  x  11  x  31  x  167  x  641  x  620160067
Date  November 29, 1997 (Mike Bennett)

back [738]
F_ba  404099764753665981 =
      3  x  7  x  11  x  13  x  331  x  406541861717
Date  February 14, 2001 (William Rex Marshall)

back [737]
F_ba  306950094269977057 =
      4713493  x  65121576349
Date  January 5, 1997 (Patrick De Geest)

back [736]
F_ba  228138929476341405 =
      3  x  5  x  3067  x  5407  x  917144983
Date  February 14, 2001 (William Rex Marshall)

back [735]
F_ba  207254460945174618 =
      2  x  3  x  4327  x  7982992872089
Date  January 27, 1998 (Mike Bennett)

back [733]
F_ba  135772344267730059 =
      3  x  101  x  157  x  36083  x  79098163
Date  December 28, 1996

back [639]
F_ba  40447213778058769 =
      11  x  33658081  x  109246259
Date  December 7, 1996

back [636]
F_ba  13661181333262459 =
      PRIME
Date  November 25, 1996

back [635]
F_ba  13593470459544309 =
      3  x  4531156819848103
Date  November 26, 1996

back [634]
F_ba  12797593520483481 =
      3  x  31  x  37  x  223  x  16677800567
Date  November 28, 1996

back [633]
F_ba  11863792420598929 =
      419  x  15439  x  1833962069
Date  November 29, 1996

back [632]
F_ba  11843191515764821 =
      37  x  12329  x  25962061577
Date  November 29, 1996

back [621]
F_ba  11100000910000111 =
      3079  x  3605066875609
Date  December 18, 1996

back [602]
F_ba  11001000910010011 =
      PRIME
Date  December 18, 1996

back [587]
F_ba  11000000910000011 =
      7  x  13  x  4813  x  26237  x  957241
Date  December 18, 1996

back [569]
F_ba  10101009901010101 =
      59  x  157  x  21803  x  50014609
Date  December 17, 1996

back [562]
F_ba  10100109901100101 =
      109  x  163  x  1097  x  17029  x  30431
Date  December 17, 1996

back [555]
F_ba  10100010911000101 =
      7  x  13  x  141811  x  782655301
Date  December 17, 1996

back [552]
F_ba  10100009901000101 =
      26153  x  386189343517
Date  December 17, 1996

back [544]
F_ba  10011099900111001 =
      163  x  3137  x  19578511571
Date  December 17, 1996

back [535]
F_ba  10010109901101001 =
      23  x  433  x  1005132031439
Date  December 17, 1996

back [530]
F_ba  10010099900101001 =
      389  x  25732904627509
Date  December 17, 1996

back [485]
F_ba  6819209882215742 =
      2  x  11  x  109  x  2843707206929
Date  April 29, 1997 (Graham Lyons)

back [484]
F_ba  3138199296186067 =
      19  x  165168384009793
Date  November 13, 1996

back [483]
F_ba  3107974295870663 =
      197  x  15776519268379
Date  November 13, 1996

back [482]
F_ba  3066446727654243 =
      3  x  17  x  41  x  1466497717673
Date  November 12, 1996

back [481]
F_ba  2564053868197734 =
      2  x  3  x  11  x  38849301033299
Date  February 28, 1997

back [480]
F_ba  2201019508986478 =
      2  x  17  x  15461  x  4187042747
Date  February 23, 1997

back [414]
F_ba  314155324482867 =
      3  x  3  x  7  x  23  x  41  x  47  x  1993  x  56453
Date  November 8, 1996

back [413]
F_ba  210786628549538 =
      2  x  313  x  336719853913
Date  November 25, 1996

back [410]
F_ba  129610990752569 =
      23  x  96181  x  58590163
Date  November 5, 1996

back [401]
F_ba  111000091000111 =
      367  x  302452564033

back [386]
F_ba  110010091010011 =
      59  x  1864577813729

back [377]
F_ba  110000091000011 =
      PRIME

back [363]
F_ba  101010990110101 =
      17  x  179  x  117539  x  282413

back [356]
F_ba  101001091100101 =
      157  x  31481  x  20435153

back [353]
F_ba  101000990100101 =
      7  x  13  x  2741  x  404925571

back [345]
F_ba  100110990111001 =
      PRIME

back [342]
F_ba  100110091011001 =
      53  x  733  x  29483  x  87403

back [339]
F_ba  100109990011001 =
      29  x  96401  x  35809469

back [309]
F_ba  98275825201587 =
      3  x  11  x  17  x  17  x  10304689651
Date  Octobre 10, 1996

back [308]
F_ba  69800670077028 =
      2  x  2  x  3  x  11  x  528792955129
Date  Octobre, 1996

back [307]
F_ba  30395080190573 =
      7  x  22621  x  191952359
Date  Octobre 6, 1996

back [263]
F_ba  6360832925898 =
      2  x  3  x  11  x  96376256453

back [262]
F_ba  3069306930693 =
      3  x  93257  x  10970783

back [261]
F_ba  2634812417864 =
      2  x  2  x  2  x  11  x  29  x  1321  x  781567

back [260]
F_ba  2149099165358 =
      2  x  23  x  101  x  462569773

back [257]
F_ba  1349465117841 =
      3  x  3  x  53  x  61  x  46378153

back [250]
F_ba  1110009100111 =
      39047  x  28427513

back [243]
F_ba  1101009101011 =
      547  x  1663  x  1210351

back [234]
F_ba  1100009100011 =
      43  x  25581606977

back [228]
F_ba  1011099011101 =
      PRIME

back [221]
F_ba  1010109110101 =
      7  x  13  x  24043  x  461677

back [218]
F_ba  1010099010101 =
      79  x  22901  x  558319

back [191]
F_ba  128817084669 =
      3  x  7  x  13  x  163  x  2894831

back [190]
F_ba  112247658961 =
      47  x  241  x  823  x  12041

back [189]
F_ba  111283619361 =
      3  x  37094539787

back [177]
F_ba  101116809851 =
      23  x  5407  x  813091

back [161]
F_ba  83163115486 =
      2  x  11  x  1831  x  2064523

back [160]
F_ba  30693069307 =
      5303  x  5787869

back [159]
F_ba  30101273647 =
      67  x  449272741

back [158]
F_ba  22865150135 =
      5  x  7013  x  652079

back [155]
F_ba  13579355059 =
      17053  x  796303

back [150]
F_ba  11100910111 =
      151  x  73515961

back [145]
F_ba  11010911011 =
      13693  x  804127

back [140]
F_ba  11000910011 =
      7  x  13  x  311  x  388711

back [136]
F_ba  10207355549 =
      8609  x  1185661

back [133]
F_ba  10110911101 =
      61  x  9901  x  16741

back [130]
F_ba  10109901101 =
      1543  x  1553  x  4219

back [129]
F_ba  10106064399 =
      3  x  277  x  12161329

back [112]
F_ba  2481623254 =
      2  x  11  x  4007  x  28151

back [111]
F_ba  2062386218 =
      2  x  23  x  73  x  137  x  4483

back [94]
F_ba  306930693 =
      3  x  19  x  29  x  185681

back [89]
F_ba  111091111 =
      PRIME

back [84]
F_ba  110091011 =
      263  x  418597

back [69]
F_ba  64030648 =
      2  x  2  x  2  x  11  x  727621

back [68]
F_ba  30001253 =
      PRIME

back [66]
F_ba  12866669 =
      61  x  210929

back [65]
F_ba  12028229 =
      197  x  61057

back [64]
F_ba  11129361 =
      3  x  73  x  89  x  571

back [55]
F_ba  3069307 =
      601  x  5107

back [54]
F_ba  2294675 =
      5  x  5  x  263  x  349

back [53]
F_ba  2012748 =
      2  x  2  x  3  x  167729

back [50]
F_ba  1270869 =
      3  x  17  x  24919

back [47]
F_ba  1109111 =
      509  x  2179

back [43]
F_ba  1042151 =
      11  x  17  x  5573

back [36]
F_ba  798644 =
      2  x  2  x  7  x  11  x  2593

back [30]
F_ba  30693 =
      3  x  13  x  787

back [29]
F_ba  24846 =
      2  x  3  x  41  x  101

back [28]
F_ba  22865 =
      5  x  17  x  269

back [19]
F_ba  2636 =
      2  x  2  x  659

back [18]
F_ba  2285 =
      5  x  457

back [14]
F_ba  836 =
      2  x  2  x  11  x  19

back [13]
F_ba  307 =
      PRIME

back [12]
F_ba  264 =
      2  x  2  x  2  x  3  x  11

back [6]
F_ba  26 =
      2  x  13
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(All rights reserved) - Last modified : June 7, 2009.
Patrick De Geest - Belgium flag - Short Bio - Some Pictures
E-mail address : pdg@worldofnumbers.com