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One Task

  1. Nov 1, 2011 #1
    [tex]a=\frac{62k+1}{k-1} [/tex]
    or
    a = [62k+1] / [k-1]

    a, k are natural numbers
    I must find all a
     
    Last edited by a moderator: Nov 6, 2011
  2. jcsd
  3. Nov 1, 2011 #2
    what do you mean you must find all a. Through what method must you find all a?
     
  4. Nov 1, 2011 #3

    mathman

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    For starters k must be even. If k is odd, k - 1 is even and 62k + 1 is odd.
     
  5. Nov 1, 2011 #4
    I know that k must be even. But then, I calculate for k=2, k=4, k=6 .... And I have results a=63, 65, 69, 71, 83, 125 but i need good method
     
  6. Nov 2, 2011 #5

    mathman

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    k-1 must divide evenly into 63. k=2,4,8,10,22.
     
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