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Topic: prove no largest prime
Replies: 51   Last Post: Jul 12, 2012 3:15 AM

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Graham Cooper

Posts: 4,227
Registered: 5/20/10
Re: prove no largest prime
Posted: Jul 8, 2012 4:42 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Jul 9, 2:19 am, Barry Schwarz <schwa...@dqel.com> wrote:
> On Sun, 8 Jul 2012 12:59:17 +1000, "Peter Webb"
>
> <r.peter.webb...@gmail.com> wrote:

> >It may be a proof by contradiction, but it is a constructive proof - the
> >proof algorithm generates an infinite number of primes. In my mind, this
> >puts it in a different category to those proofs which show nothing meets the
> >stated requirement.

>
> How do you figure p(1) * p(2) * ...  * p(n) + 1 generates a prime?
>


it's not divisible by p(1) or p(2) or .. p(n)

PROOF:

prime=true
let x=1
START
p(n)+1 / p(x) has remainder (1/p(x))
OTHERWISE prime=false
inc x
IF x<=n GOTO START
PRINT primme

OUTPUT: true

Loop Invariant
prime=true IFF p(n)+1 has no divisor < p(n)+1

Herc


Date Subject Author
7/4/12
Read prove no largest prime
Tim923
7/4/12
Read Re: prove no largest prime
FredJeffries@gmail.com
7/4/12
Read Re: prove no largest prime
gnasher729
7/4/12
Read Re: prove no largest prime
quasi
7/4/12
Read Re: prove no largest prime
quasi
7/4/12
Read Re: prove no largest prime
quasi
7/4/12
Read Re: prove no largest prime
quasi
7/5/12
Read Re: prove no largest prime
Frederick Williams
7/7/12
Read Re: prove no largest prime
Peter Webb
7/8/12
Read Re: prove no largest prime
|-| E R C
7/8/12
Read Re: prove no largest prime
Graham Cooper
7/8/12
Read Re: prove no largest prime
Barry Schwarz
7/8/12
Read Re: prove no largest prime
Graham Cooper
7/8/12
Read Re: prove no largest prime
Graham Cooper
7/8/12
Read Re: prove no largest prime
Frederick Williams
7/8/12
Read Re: prove no largest prime
Pubkeybreaker
7/8/12
Read Re: prove no largest prime
Graham Cooper
7/8/12
Read Re: prove no largest prime
Graham Cooper
7/9/12
Read Re: prove no largest prime
David Bernier
7/9/12
Read Re: prove no largest prime
Frederick Williams
7/11/12
Read Re: prove no largest prime
Graham Cooper
7/11/12
Read Re: prove no largest prime
Frederick Williams
7/11/12
Read Re: prove no largest prime
Graham Cooper
7/11/12
Read Re: prove no largest prime
Frederick Williams
7/11/12
Read Re: prove no largest prime
Graham Cooper
7/11/12
Read Re: prove no largest prime
Frederick Williams
7/11/12
Read Re: prove no largest prime
Graham Cooper
7/11/12
Read Re: prove no largest prime
Pubkeybreaker
7/11/12
Read Re: prove no largest prime
Frederick Williams
7/11/12
Read Re: prove no largest prime
Gary G Forbis
7/11/12
Read Re: prove no largest prime
Graham Cooper
7/11/12
Read Re: prove no largest prime
dilettante
7/11/12
Read Re: prove no largest prime
Gary G Forbis
7/12/12
Read Re: prove no largest prime
dilettante
7/12/12
Read Re: prove no largest prime
Gary G Forbis
7/11/12
Read Re: prove no largest prime
Graham Cooper
7/11/12
Read Re: prove no largest prime
Graham Cooper
7/11/12
Read Re: prove no largest prime
Usher73
7/8/12
Read Re: prove no largest prime
Peter Webb
7/11/12
Read Re: prove no largest prime
Frederick Williams
7/9/12
Read Re: prove no largest prime
Peter Webb
7/9/12
Read Re: prove no largest prime
Graham Cooper
7/9/12
Read Re: prove no largest prime
Graham Cooper
7/5/12
Read Re: prove no largest prime
Frederick Williams
7/5/12
Read Re: prove no largest prime
quasi
7/4/12
Read Re: prove no largest prime
Bart Goddard
7/5/12
Read Re: prove no largest prime
trj
7/4/12
Read Re: prove no largest prime
Ken.Pledger@vuw.ac.nz
7/4/12
Read Re: prove no largest prime
gnasher729
7/5/12
Read Re: prove no largest prime
Tim923
7/5/12
Read Re: prove no largest prime
Graham Cooper
7/5/12
Read Re: prove no largest prime
Frederick Williams

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