MultiplicativeOrder
 Usage
• MultiplicativeOrder[k, n] 给出以 n 为模的 k的乘法阶数, 定义为使得  成立的最小整数  . • MultiplicativeOrder[k, n,   ,  , ...  ]给出以 n 为模的 k的广义乘法阶数,定义为使得  成立的最小整数  .
Notes
• 若不存在整数  满足必要条件,则 MultiplicativeOrder不进行计算就返回.
 Further Examples
The  in the fourth place shows that  is the least m for which  divides  .
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Here is another way to see this.
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This shows that  is the smallest integer m such that  is congruent to  or  mod  .
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This shows the same thing.
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The function DigitCycleLength gives the digit period for any rational number r in base b.
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This shows that the decimal representation of  in base  repeats every  digits.
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