1572*8634=13572648

northwolves

王守恩 发表于 2025-10-30 19:06
再放宽条件。A, B是任意数。 A × B = C。C的数码集合  = {1到a的个位数 + 1到b的个位数} 。

其中:  a 是  ...

{542136, 231, 125233416}

northwolves

{{435261,35412,15413462532},{452136,31524,14253135264},{463215,52341,24245136315},{532614,23154,12332144556},{542136,45231,24521353416},{562341,41532,23355146412},{563241,45123,25415123643},{652431,23514,15341262534}}

northwolves

1. For[m=5,m<8,m++,For[n=1,n<m,n++,s=Join[Range@m,Range@n];v=Sort[s];t=Select[Permutations[s],#[[1]]>0&&#[[m+1]]>0&&#[[1]]*#[[m+1]]>5&];t=Select[Table[r=Partition[k,UpTo[m]];{FromDigits/@r,Times@@FromDigits/@r},{k,t}],Sort[IntegerDigits@#[[2]]]==v&];If[Length@t>0,Print[{{m,n},Length@t,t}]]]]

复制代码

{{5,2},1,{{{31251,42},1312542}}}
{{6,3},8,{{{212514,633},134521362},{{312615,423},132236145},{{345321,612},211336452},{{343521,621},213326541},{{536211,432},231643152},{{542136,231},125233416},{{614223,531},326152413},{{635112,243},154332216}}}
{{6,4},36,{{{213254,6341},1352243614},{{234116,5234},1225363144},{{234524,6113},1433645212},{{244631,5123},1253244613},{{263123,5441},1431652243},{{263231,5414},1425132634},{{315242,4163},1312352446},{{311642,4253},1325413426},{{322415,4163},1342213645},{{323426,4151},1342541326},{{341321,6254},2134621534},{{351644,3221},1132645324},{{361214,4253},1536243142},{{361544,3221},1164533224},{{412361,3425},1412336425},{{413264,3251},1343521264},{{415361,3422},1421365342},{{416351,3224},1342315624},{{421352,3641},1534142632},{{425246,3131},1331445226},{{451463,3221},1454162323},{{452261,3143},1421456323},{{456221,3341},1524234361},{{441653,3221},1422564313},{{512432,4163},2133254416},{{522443,3161},1651442323},{{531623,4241},2254613143},{{531164,2324},1234425136},{{543143,6122},3325121446},{{543431,2621},1424332651},{{544322,6311},3435216142},{{562343,4112},2312354416},{{633542,2141},1356413422},{{641534,2231},1431262354},{{643151,2432},1564143232},{{643541,2213},1424156233}}}
{{6,5},54,{{{212541,63354},13465322514},{{234261,53514},12536243154},{{241431,52365},12642534315},{{261342,54153},14152453326},{{263544,51321},13525341624},{{262134,55413},14525631342},{{223413,64551},14421532563},{{315423,45162},14245133526},{{315312,42546},13415264352},{{316155,42423},13412243565},{{311325,46425},14453263125},{{321153,44625},14331452625},{{326151,44532},14524156332},{{341316,45252},15445231632},{{343221,61545},21123536445},{{361251,45432},16412355432},{{331551,46224},15325613424},{{332154,46521},15452136234},{{413532,56142},23216513544},{{411453,32625},13423654125},{{421236,51354},21632153544},{{421431,55623},23441256513},{{422415,36531},15431242365},{{435261,35412},15413462532},{{435324,51261},22315143564},{{452136,31524},14253135264},{{452235,36141},16344225135},{{452463,31215},14123632545},{{453252,34116},15463145232},{{461223,35415},16334212545},{{463215,52341},24245136315},{{465234,52131},24253113654},{{442653,35112},15542432136},{{512241,63354},32452516314},{{513432,61452},31551423264},{{513456,24231},12441552336},{{513651,22434},11523246534},{{516321,45234},23355264114},{{532614,23154},12332144556},{{534462,25131},13431564522},{{541452,63231},34236551412},{{542136,45231},24521353416},{{543321,42615},23153624415},{{545313,24612},13421243556},{{561252,41433},23254354116},{{561543,22341},12545432163},{{562341,41532},23355146412},{{563241,45123},25415123643},{{554232,64311},35643214152},{{554331,22614},12535641234},{{556413,22134},12315645342},{{611325,23445},14332514625},{{611523,43245},26445312135},{{652431,23514},15341262534}}}
{{7,2},29,{{{1521263,74},112573462},{{1734221,65},112724365},{{2161742,53},114572326},{{2162741,53},114625273},{{2173421,65},141272365},{{2127614,53},112763542},{{2743112,56},153614272},{{3725162,41},152731642},{{4213157,62},261215734},{{4216172,53},223457116},{{4256711,32},136214752},{{4267121,53},226157413},{{4312721,56},241512376},{{4523612,71},321176452},{{4531622,71},321745162},{{5147261,32},164712352},{{5276231,41},216325471},{{5223716,41},214172356},{{5226113,47},245627311},{{5227136,41},214312576},{{5672231,41},232561471},{{5714162,23},131425726},{{5761412,23},132512476},{{5762231,41},236251471},{{6252371,41},256347211},{{6273521,41},257214361},{{6754211,32},216134752},{{7461221,35},261142735},{{7462121,35},261174235}}}