[EMAIL PROTECTED] wrote:
> 
> On 4 Dec 2001, at 17:59, George Woltman wrote:
> 
> > >Case 1: I finish first, find a prime and announce my discovery. I did
> > >the work but the exponent is assigned to you! Who gets the
> > >credit???
> >
> > You, get the credit.  User b will be mighty disheartened.  I know first hand.
> > Slowinski's Cray beat my own Pentium-90 by just a few days in the discovery
> > of M#34.
> 
> Ooof. I didn't know about that.

I read about this on the mailing list archives. The info was scattered
over several posts, hopefully I recall everything correctly, and that
all the story bits belong to the same Mersenne prime! I hope George will
correct me if I'm wrong.

David Slowinski contacted George, asking him wether Prime95 could test
numbers >1 million bits. He had just discovered that M1257787 was prime
- when George's own computer was only a few days from finishing that
very exponent! David also asked for an independet verification of the
prime, so suddenly the LL run on George's computer that had almost
discovered GIMPS' first prime was no more than a double check for
David's success.

To make matters worse, Slowinski delayed the announcement of the prime
as he "was out of town" for a while - which turned out to be the better
part of half a year. I think I would have flipped. Living for half a
year with such a freak incident on your mind and not even being able to
tell anyone.
OTOH, it's an impressive example of how to keep a secret.

Alex
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