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MathGroup Archive 1996

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Mma: 13 is not prime!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg4603] Mma: 13 is not prime!
  • From: Felix Holderied <felix at ira.uka.de>
  • Date: Wed, 21 Aug 1996 03:25:22 -0400
  • Organization: IRF Uni-Karlsruhe
  • Sender: owner-wri-mathgroup at wolfram.com

Please help me:

In[]:=
        PrimeQ[13]
Out[]=
        True


In[]:=
        PrimeQ[p] /.{p->13}
Out[]=
        False

WHY?

Greetings, Felix

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