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单词 ParasiticNumber
释义

parasitic number


Given a base b integer n with k digits d1,,dk (with d1 being the least significant digit), and an integer 1<m<b, if it is the case that

m(i=1kdibi-1)=d1bk-1+(i=2kdibi-2),

then n is called an m-parasitic number or m-left-transposable number.

If one takes an m-parasitic number, concatenates copies of its digits in order whatever number of times one wants, the resulting new number will also be m-parasitic.

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更新时间:2025/5/3 12:06:43