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I The next prime

  1. May 2, 2017 #1
    Is there a quick proof for showing that the next prime is within twice the current prime?


    Never mind. Erdős had given a proof of this (of Bertrand's postulate to be precise) at a fairly young age.

  2. jcsd
  3. May 2, 2017 #2


    Staff: Mentor

    Thanks for sharing this.
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