Mersenne: factoring the higher exponents

2000-12-15 Thread Henk Stokhorst

L.S.,

I spend the past months factoring the range 16.000.000 up to 17.000.000 form
2^52 up to 2^58. I reported the results once a week, which are included in the
database. This week someone else started to work on this as well although up
to 2^56. This work is therefor done twice. What is being done and can be done
to avoid this?

YotN,

Henk Stokhorst

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Mersenne Digest V1 #800

2000-12-15 Thread Mersenne Digest


Mersenne Digest   Friday, December 15 2000   Volume 01 : Number 800




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Date: Sun, 10 Dec 2000 01:32:27 -0600
From: "Richard B. Woods" <[EMAIL PROTECTED]>
Subject: Mersenne: Caution about P4 future

I urge those of you contemplating a Pentium 4 purchase to read a
cautionary note about its future written by Thomas Pabst, author of
"Tom's Hardware Guide" at http://www.sysdoc.pair.com

Basically, Pabst has written that if you buy a Pentium 4 before next
summer, you may not be able to upgrade the processor alone to a faster
P4 later on.  According to him, Intel plans to change both the P4
chipset and socket in mid-2001; Intel will still produce P4s after
mid-2001, but those won't be motherboard-compatible with the current
version of P4.

Now, if you know you won't ever want to upgrade only your P4 processor
without also upgrading the motherboard, or you don't mind having to buy
a new motherboard in order to use a faster P4, then this is not
relevant.  Otherwise, have a look at the part of Pabst's Intel roadmap
article at http://www.sysdoc.pair.com/cpu/00q4/001013/roadmap-02.html
subtitled "Pentium 4 'Willamette' Is Just A Short-Term Filler".

Richard Woods

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Date: Sun, 10 Dec 2000 11:32:50 -0500 (EST)
From: [EMAIL PROTECTED]
Subject: Re: Mersenne: Caution about P4 future

> 
> I urge those of you contemplating a Pentium 4 purchase to read a
> cautionary note about its future written by Thomas Pabst, author of
> "Tom's Hardware Guide" at http://www.sysdoc.pair.com
> 
> Basically, Pabst has written that if you buy a Pentium 4 before next
> summer, you may not be able to upgrade the processor alone to a faster
> P4 later on.  According to him, Intel plans to change both the P4
> chipset and socket in mid-2001; Intel will still produce P4s after
> mid-2001, but those won't be motherboard-compatible with the current
> version of P4.
> 
> Now, if you know you won't ever want to upgrade only your P4 processor
> without also upgrading the motherboard, or you don't mind having to buy
> a new motherboard in order to use a faster P4, then this is not
> relevant.  Otherwise, have a look at the part of Pabst's Intel roadmap
> article at http://www.sysdoc.pair.com/cpu/00q4/001013/roadmap-02.html
> subtitled "Pentium 4 'Willamette' Is Just A Short-Term Filler".
> 
> Richard Woods
> 
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> Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm
> Mersenne Prime FAQ  -- http://www.tasam.com/~lrwiman/FAQ-mers
> 

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Date: Sun, 10 Dec 2000 13:07:27 -0500 (EST)
From: Jason Stratos Papadopoulos <[EMAIL PROTECTED]>
Subject: Re: Mersenne: Caution about P4 future

On Sun, 10 Dec 2000, Richard B. Woods wrote:

> I urge those of you contemplating a Pentium 4 purchase to read a
> cautionary note about its future written by Thomas Pabst, author of
> "Tom's Hardware Guide" at http://www.sysdoc.pair.com

Anyone contemplating a P4 purchase and in need of second, third and fourth
opinions should use DejaNews to track down all the discussions in
comp.sys.ibm.pc.hardware.chips on whether the P4 is a good thing or not at
this time. In particular you'll find out that Tom's opinion has 
flip-flopped about three times on the P4.

jasonp

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Date: Mon, 11 Dec 2000 09:51:49 -0600
From: "Richard B. Woods" <[EMAIL PROTECTED]>
Subject: Re: Mersenne: Caution about P4 future

Jason Stratos Papadopoulos has alerted me to my not having sufficiently
delimited the scope of my previous P4 future cautionary note in its
topic paragraph rather than its final paragraph.  That, alas, was a
particular example of a persistent weakness in my communication skills. 
I apologize for it.

If I were to recompose my previous message, its topic paragraph would be
more like:

For those of you contemplating a Pentium 4 purchase -- If you won't ever
want to upgrade your P4 processor without also upgrading the
motherboard, or if you won't mind having to buy a new motherboard in
order to upgrade to a faster P4, then this message is not relevant for
you.  OTOH, if you want to be able to upgrade your P4 processor without
having to buy a new motherboard, I urge you to read a cautionary note by
Tom Pabst about Intel's future 

Mersenne: RE: Mersenne Digest V1 #800

2000-12-15 Thread Richard J. Otter

I haven't seen any news posted on the mersenne.org home page lately.

I'm wondering about the status of the project. Are we running out of steam?

I I alone in feeling a bit discouraged about finding another mersenne prime
soon?

Richard Otter


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