ysr 发表于 2024-10-2 21:14

目前难于分解的合数

M1277=2^1277-1=有385位，用时0秒2601983048666099770481310081841021384653815561816676201329778087600902014918340074503059860433081046210605403488570251947845891562080866227034976651419330190731032377347305086443295837415395887618239855136922452802923419286887119716740625346109565072933087221327790207134604146257063901166556207972729700461767055550785130256674608872183239507219512717434046725178680177638925792182271

ysr 发表于 2024-10-3 19:09

如下这个乘法程序靠谱但就是速度不快：

Public Function MbC(D1 As String, D2 As String) As String
Dim X, Y ';两数长度
X = Len(D1): Y = Len(D2)
Dim A() As Integer
ReDim A(1 To X + Y, 1 To Y)
Dim I, J, C1, C2, CJ, JW
For J = Y To 1 Step -1 ';D2
JW = 0 ';进位清0
C2 = Mid(D2, J, 1) ';每位数
For I = X To 1 Step -1 ';D1
C1 = Mid(D1, I, 1) ';每位数
CJ = C1 * C2 + JW ';计算乘积
c = I + J: r = Y + 1 - J
A(c, r) = CJ Mod 10 ';本位
JW = CJ \ 10 ';进位
Next
A(c - 1, r) = JW
Next
Dim B() As Integer
ReDim B(1 To X + Y)
JW = 0
For I = X + Y To 1 Step -1
Bit = JW
For J = 1 To Y
Bit = Bit + A(I, J)
Next
B(I) = Bit Mod 10
JW = Bit \ 10
Next
If B(1) > 0 Then
MbC = MbC & B(1)
Else
MbC = MbC
End If
For I = 2 To X + Y
MbC = MbC & B(I)
Next
End Function

ysr 发表于 2024-10-3 22:29

1153103961384478448404925715924378885327554202134226047348028294505040734467336124656452525279797166397567399850900985140768071391715673547272680475009022731025540851253778962537039004520776708021234701340368231774597408929744933116431873027001298810225982471847

ysr 发表于 2024-11-25 08:11

本帖最后由 ysr 于 2024-11-25 00:25 编辑

25195908475657893494027183240048398571429282126204032027777137836043662020707595556264018525880784406918290641249515082189298559149176184502808489120072844992687392807287776735971418347270261896375014971824691165077613379859095700097330459748808428401797429100642458691817195118746121515172654632282216869987549182422433637259085141865462043576798423387184774447920739934236584823824281198163815010674810451660377306056201619676256133844143603833904414952634432190114657544454178424020924616515723350778707749817125772467962926386356373289912154831438167899885040445364023527381951378636564391212010397122822120720357
微信图片_20241125075822.jpg
有617位数
微信图片_20241125080226.jpg
就是这个叫”徐晓亚然“男不男女不女的发的吹捧张某某的文章中的图片，说我的回复：不要在那里发民科的思维，现在该文章已经被他她它自己删除了。


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