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MathGroup Archive 1997

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Re: Prime research

  • To: mathgroup at smc.vnet.net
  • Subject: [mg7845] Re: Prime research
  • From: Chun Che Li <ccli at math.ucla.edu>
  • Date: Mon, 14 Jul 1997 03:01:24 -0400
  • Organization: University of California, Los Angeles
  • Sender: owner-wri-mathgroup at wolfram.com

2^256+1=2^(2^8)+1  is the eight fermat number, and is not a prime.
Check out this website for more detail.

http://www.utm.edu/research/primes/types.html#Fermat

Charles Li

On 8 Jul 1997, Your Name wrote:

> 	Hi, 
> 
> 	I'm student in mathematics and have big problem with mathematica 2.0 : 
> 
> When I enter Prime[2^256+1] , mathematica give for response false. 
> After I calculate with my Ti-92 , and it tell me that 2^256 +1 is Prime who
> can help me ?
> mathematica is doing errors ! 
> 
> 
> 			Romain Pacanowski
> 
> 
> 



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