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Thread: Estimate the number of digits in p_n where p_n+1 = 2^(p_n) - 1

  1. May 17th 2010, 11:02 PM #1
    Smith
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    Lightbulb Estimate the number of digits in p_n where p_n+1 = 2^(p_n) - 1

    Let p_1 = 2, and for all n > 0, and p_n+1 = 2^(p_n) - 1.

    Estimate the number of digits in p_n in terms of n.
    Last edited by mr fantastic; May 18th 2010 at 03:41 AM. Reason: Re-titled.
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