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Old 2009-06-04, 20:52   #23
joblack
 
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Quote:
Originally Posted by cheesehead View Post
(a) I would, but maybe others would find it harder to do so. (b) By the time a 100M-digit prime is found, we'll probably have significantly faster hardware. (c) As noted earlier, verification of a reported prime would be done on big-tin 16-or-more-CPU systems, so would take only a fraction of the time someone's home/work PC took for the original discovery.
Sounds like you knew about this new mersenne prime number before the rest of us.

Last fiddled with by joblack on 2009-06-04 at 20:53
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Old 2009-06-04, 21:01   #24
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Quote:
Originally Posted by joblack View Post
Sounds like you knew about this new mersenne prime number before the rest of us.
...he said nothing that's not publicly known. Why would you possibly think this?
Also, this number is 10+M digits, not 100+M digits.
Quote:
Originally Posted by lycorn View Post
What is a "success" supposed to mean, in this context, a new mersenne prime?
I assume so. More specifically, a new Mersenne prime found on v5.
http://web.archive.org/web/200802080...rt_top_500_LL/ has George Woltman with 39 Attempts and 39 Successes. I'm guessing George ran (or just tricked it into accepting) the first 39 Mersenne primes that Prime95 will run (2^5-1, ...) to test things.

Last fiddled with by Mini-Geek on 2009-06-04 at 21:08
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Old 2009-06-04, 21:04   #25
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Quote:
Originally Posted by Mini-Geek View Post
...he said nothing that's not publicly known. Why would you possibly think this?
Also, this number is 10+M digits, not 100+M digits.
Yes I know ... it's just a hunch.
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Old 2009-06-04, 21:07   #26
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Quote:
Originally Posted by joblack View Post
Sounds like you knew about this new mersenne prime number before the rest of us.
We're just bringing you up to speed on what veterans already know. You could get the same info from finding and reading past forum threads that discussed earlier discoveries; in fact, you'd probably learn other stuff we haven't mentioned this time, so that you could begin sounding like a veteran, too! :-)

Last fiddled with by cheesehead on 2009-06-04 at 21:08
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Old 2009-06-04, 21:41   #27
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Quote:
Originally Posted by cheesehead View Post
We're just bringing you up to speed on what veterans already know. You could get the same info from finding and reading past forum threads that discussed earlier discoveries; in fact, you'd probably learn other stuff we haven't mentioned this time, so that you could begin sounding like a veteran, too! :-)
Well, I'm in general not a fan of keeping information secret, especially in a distributed project (where everybody donates free computational power) like gimps. IMHO you can publish your findings under usual reserve.

If I would find a 100M digit mp I doubt that I would want to keep it a secret for such a long time ... after all the hours (and most certainly money for the electricity) I would like to collect the 'honor' ;) ... but that's only theory at the actual time.

Let's enjoy the moment [

Last fiddled with by joblack on 2009-06-04 at 22:05
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Old 2009-06-04, 22:35   #28
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Another exponent p where p-1 is rather smooth...

Alex
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Old 2009-06-04, 22:45   #29
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Quote:
Originally Posted by akruppa View Post
Another exponent p where p-1 is rather smooth...

Alex
Hmmm ....

Last fiddled with by joblack on 2009-06-04 at 22:46
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Old 2009-06-04, 22:58   #30
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Just going out on a whim here but the last three digits are not by chance 811 are they?

Last fiddled with by akruppa on 2009-06-04 at 23:01 Reason: Nope.
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Old 2009-06-04, 23:05   #31
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Quote:
Originally Posted by Primeinator View Post
Just going out on a whim here but the last three digits are not by chance 811 are they?
Well, I say no more about that special mersenne prime incident or cheesehead will come back with a club ;) ...
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Old 2009-06-04, 23:09   #32
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Quote:
Well, I say no more about that special mersenne prime incident or cheesehead will come back with a club ;) ...
I think it is time to do some sleuthing.
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Old 2009-06-04, 23:53   #33
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Geez, this is embarrassing. What if GIMPS found a new prime and no one noticed???

I've just sent an email to the user to see if he can get the last save file. I've also emailed Scott so that he can do some detective work. No email was sent to the dozen or so interested parties in April (and yes we did actually test that code path last year). During our abbreviated beta test of v5, Scott and I didn't get a chance to discuss hiding the exponent from the many server reports.

A big thanks to lycorn for noticing the huge oversight.

P.S. and of course I'm leaving on vacation tomorrow morning. I'll be back on Tuesday.
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