Math Help Forum: Prime numbers

  1. April 26th, 2010, 04:01 PM #1
    racewithferrari
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    Prime numbers

    show that x^2 -x + 41 is prime for all integers x with 0<= x >=40 . show , however , that it is composite for x =41.
    Last edited by mr fantastic; April 27th, 2010 at 04:10 AM. Reason: Re-titled.
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  3. April 26th, 2010, 06:35 PM #2
    chiph588@
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    Prime-Generating Polynomial -- from Wolfram MathWorld

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