【數學教育】檢查質數的方法 數字a是不是質數? 檢查到根號a就可以了！
Synopsis
檢查一個數是不是質數，必須確定它除了1和它本身以外沒有別的因數，才可以認定這是個質數。看起來要檢查的數好像很多，但事實 ...
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