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Math Help - nth cube free number

  1. #1
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    nth cube free number

    Hi, if a cube free number is defined as one whose none of the factors in a cube number(of the form 8=2*2*2 , etc) then how can one find any nth cube free number?
    Is there any forumala?
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    Re: nth cube free number

    Quote Originally Posted by pranay View Post
    Hi, if a cube free number is defined as one whose none of the factors in a cube number(of the form 8=2*2*2 , etc) then how can one find any nth cube free number?
    Is there any forumala?
    Interesting!

    Cubefree -- from Wolfram MathWorld
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