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Factorization of the
Palindromic Pentagonals
rood Palindromic Pentagonals rood comments



Legend

F_ba Decomposition of the basenumber in its prime factors. F_pp Decomposition of the palindromic pentagonal. Note : a palindromic pentagonal will always be divisible by its basenumber when this last one is 'odd'. With 'even' basenumbers you'll notice that the pentagonals are always divisible by half their basenumbers. To reconstruct the pentagonals you must take into account the green together with the purple prime factors but not the black 2. Date Date of discovery by the author. blue Hypertext links to related topics in number theory Comm Comments about the palindromic pentagonal number.


Factorizations


back [58]
F_ba  128481111918761748263908 =
      2  x  2  x  7  x  19  x  241505849471356669669
F_pp  24761094179822073249932323994237022897149016742 =
      71  x  60659  x  11347379  x  7886991733
Date  January 6, 2008 (Feng Yuan)

back [57]
F_ba  4181240246129576678503 =
      7  x  13  x  2053  x  22380757434200161
F_pp  26224154993780584443322334448508739945142262 =
      2  x  11  x  91297  x  3122606024689831
Date  January 5, 2008 (Feng Yuan)

back [56]
F_ba  1161338314703013743743 =
      19  x  173  x  928159  x  380659497671
F_pp  2023060021795854282372732824585971200603202 =
      2  x  9733  x  13901  x  6437648365279
Date  January 6, 2008 (Feng Yuan)

back [55]
F_ba  101908013398232552381 =
      13  x  43  x  113  x  47431  x  34013850853
F_pp  15577864792161518113031181516129746877551 =
      2843  x  53767857930829697
Date  January 3, 2008 (Feng Yuan)

back [54]
F_ba  32178927183122554461 =
      3  x  3  x  3  x  3  x  3  x  11  x  12038506241347757
F_pp  1553225031985055486446845505891305223551 =
      89  x  479  x  170341  x  6646884121
Date  January 3, 2008 (Feng Yuan)

back [53]
F_ba  642912991153879996 =
      2  x  2  x  11  x  41  x  2042077  x  174519337
F_pp  620005671291643466664346192176500026 =
      53  x  36391301386068679
Date  January 6, 2008 (Feng Yuan)

back [52]
F_ba  222497695855916654 =
      2  x  11551  x  9631101023977
F_pp  74257836991787986368978719963875247 =
      7  x  95356155366821423
Date  January 6, 2008 (Feng Yuan)

back [51]
F_ba  64541848291142556 =
      2  x  2  x  3  x  37  x  3156121  x  46057969
F_pp  6248475271255291881925521725748426 =
      7  x  11  x  11  x  13  x  17584737523697
Date  January 6, 2008 (Feng Yuan)

back [50]
F_ba  1343985615421963 =
      179  x  563  x  13336233619
F_pp  2709446001691728271961006449072 =
      2  x  2  x  2  x  2  x  510331  x  246895939
Date  April 2, 2002 (Feng Yuan)

back [49]
F_ba  1331901641608903 =
      17  x  718007  x  109117537
F_pp  2660942974380735370834792490662 =
      2  x  97  x  345133  x  29838377
Date  April 2, 2002 (Feng Yuan)

back [48]
F_ba  192460705375190 =
      2  x  5  x  7  x  87797  x  31315861
F_pp  55561684670273437207648616555 =
      29  x  41  x  1439  x  337458739
Date  August 5, 2000 (Patrick De Geest)

back [47]
F_ba  189271045290605 =
      5  x  7573  x  4998575077
F_pp  53735292878097279087829253735 =
      7  x  17  x  127447  x  18719699

back [46]
F_ba  62640018209362 =
      2  x  11  x  2847273554971
F_pp  5885657821903773091287565885 =
      5  x  13  x  13  x  97  x  2292686569

back [45]
F_ba  62407875352937 =
      3041  x  20522155657
F_pp  5842114359101551019534112485 =
      5  x  11  x  1702032964171

back [44]
F_ba  22073207482889 =
      64609  x  341642921
F_pp  730839732873989378237938037 =
      33109811224333

back [43]
F_ba  8505462902906 =
      2  x  4252731451453
F_pp  108514348789060987843415801 =
      1229  x  20761911073

back [42]
F_ba  6106091136277 =
      11  x  293  x  1894536499
F_pp  55926523446777764432562955 =
      5  x  199  x  9205162517

back [41]
F_ba  3690877000943 =
      11  x  101  x  3322121513
F_pp  20433859554133145595833402 =
      2  x  1327  x  2293  x  909737

back [40]
F_ba  2704211220546 =
      2  x  3  x  3  x  11  x  6907  x  1977361
F_pp  10969137487988978473196901 =
      8112633661637

back [39]
F_ba  2269269065474 =
      2  x  47  x  349  x  69172379
F_pp  7724373137274727313734277 =
      7  x  11  x  233  x  239  x  1587679

back [38]
F_ba  2118668671851 =
      3  x  107  x  31817  x  207443
F_pp  6733135411623261145313376 =
      2  x  2  x  2  x  2  x  2  x  66271  x  1498583

back [37]
F_ba  1199186171664 =
      2  x  2  x  2  x  2  x  3  x  13  x  37  x  463  x  112181
F_pp  2157071211464641121707512 =
      7  x  53  x  9696923221

back [36]
F_ba  100208264581 =
      2383  x  42051307
F_pp  15062544435453444526051 =
      7  x  13  x  29  x  56958089

back [35]
F_ba  72507025789 =
      11  x  9871  x  667769
F_pp  7885903183113813095887 =
      71  x  613  x  2498921

back [34]
F_ba  20483169156 =
      2  x  2  x  3  x  3  x  23  x  2851  x  8677
F_pp  629340327999723043926 =
      401  x  153240667

back [33]
F_ba  18517422797 =
      23  x  805105339
F_pp  514342420555024243415 =
      5  x  42641  x  130279

back [32]
F_ba  18306458265 =
      3  x  5  x  107  x  157  x  72649
F_pp  502689621303126986205 =
      127  x  216218011

back [31]
F_ba  6693818696 =
      2  x  2  x  2  x  367  x  2279911
F_pp  67210813099031801276 =
      7  x  11  x  11  x  29  x  817549

back [30]
F_ba  2049123156 =
      2  x  2  x  3  x  127  x  1344569
F_pp  6298358561658538926 =
      6147369467

back [29]
F_ba  1345679688 =
      2  x  2  x  2  x  3  x  56069987
F_pp  2716280733370826172 =
      311  x  317  x  40949

back [28]
F_ba  851649306 =
      2  x  3  x  17  x  47  x  59  x  3011
F_pp  1087959810189597801 =
      19  x  67  x  2007029

back [27]
F_ba  818049201 =
      3  x  6449  x  42283
F_pp  1003806742476083001 =
      1227073801

back [26]
F_ba  700457153 =
      11  x  457  x  139339
F_pp  735960334433069537 =
      101  x  10402829

back [25]
F_ba  316882086 =
      2  x  3  x  23  x  2296247
F_pp  150621384483126051 =
      11  x  86422387

back [24]
F_ba  225563533 =
      13  x  31  x  347  x  1613
F_pp  76318361016381367 =
      577  x  586387

back [23]
F_ba  100058581 =
      7  x  257  x  55619
F_pp  15017579397571051 =
      839  x  178889

back [22]
F_ba  84885761 =
      827  x  102643
F_pp  10808388588380801 =
      11  x  2647  x  4373

back [21]
F_ba  59401650 =
      2  x  3  x  5  x  5  x  7  x  11  x  37  x  139
F_pp  5292834004382925 =
      13  x  1619  x  8467

back [20]
F_ba  13280839 =
      11  x  11  x  13  x  8443
F_pp  264571020175462 =
      2  x  7  x  61  x  23327

back [19]
F_ba  2684561 =
      11  x  109  x  2239
F_pp  10810300301801 =
      7  x  13  x  17  x  19  x  137

back [18]
F_ba  1979130 =
      2  x  3  x  5  x  37  x  1783
F_pp  5875432345785 =
      5937389

back [17]
F_ba  1965117 =
      3  x  7  x  11  x  47  x  181
F_pp  5792526252975 =
      5  x  5  x  157  x  751

back [16]
F_ba  1258723 =
      PRIME
F_pp  2376574756732 =
      2  x  2  x  11  x  11  x  47  x  83

back [15]
F_ba  44059 =
      PRIME
F_pp  2911771192 =
      2  x  2  x  2  x  11  x  751

back [14]
F_ba  31926 =
      2  x  3  x  17  x  313
F_pp  1528888251 =
      11  x  8707

back [13]
F_ba  26906 =
      2  x  11  x  1223
F_pp  1085885801 =
      7  x  13  x  887

back [12]
F_ba  26466 =
      2  x  3  x  11  x  401
F_pp  1050660501 =
      79397

back [11]
F_ba  6010 =
      2  x  5  x  601
F_pp  54177145 =
      11  x  11  x  149

back [10]
F_ba  4228 =
      2  x  2  x  7  x  151
F_pp  26811862 =
      11  x  1153

back [9]
F_ba  2229 =
      3  x  743
F_pp  7451547 =
      3343

back [8]
F_ba  2173 =
      41  x  53
F_pp  7081807 =
      3259

back [7]
F_ba  693 =
      3  x  3  x  7  x  11
F_pp  720027 =
      1039

back [6]
F_ba  101 =
      PRIME
F_pp  15251 =
      151

back [5]
F_ba  44 =
      2  x  2  x  11
F_pp  2882 =
      131

back [4]
F_ba  26 =
      2  x  13
F_pp  1001 =
      7  x  11

back [3]
F_ba  4 =
      2  x  2
F_pp  22 =
      11

back [2]
F_ba  2 =
      PRIME
F_pp  5 =
      PRIME

back [1]
F_ba  1 =
      1
F_pp  1 =
      1

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