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Old 2005-12-18, 09:03   #78
ppo
 
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Quote:
Originally Posted by akruppa
Double-checking results before publishing them is simply a matter of scientific prudence.

Alex
Since this kind of discussion is a recurrent theme, it would perhaps be useful if someone could put in the Mersenne Wiky a brief description of the process and of the reasons behind it.
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Old 2005-12-18, 10:02   #79
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Ok , but I don't understand why we can't say ,if we know, that "Mxxxxxxxx" is a PROBABLE new Mersenne prime (before verification) . Let's wait some days and then we'll know".

Why there is secrecy on the PROBABLE NUMBER ?
It seems weird to me ...

Last fiddled with by pacionet on 2005-12-18 at 10:02
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Old 2005-12-18, 10:12   #80
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I also believe one of the requirements of the reward is publishing in a journal, and they require to be the first ones notified.
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Old 2005-12-18, 12:31   #81
patrik
 
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"Patrik Johansson"
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Quote:
Originally Posted by ppo
Quote:
Originally Posted by akruppa
Didn't the bogus residue printed for unverified primes follow some simple pattern? Anyone remember what it was?

Alex

EDIT: I have a suspicion...
I believe that George changed that, in order for it to be less obvious, but perhaps it is still possible to identify a pattern...
I just checked the residues using that old algorithm, and one matches! So now I know the candidate number.
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Old 2005-12-18, 14:10   #82
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Quote:
Originally Posted by pacionet
Ok , but I don't understand why we can't say ,if we know, that "Mxxxxxxxx" is a PROBABLE new Mersenne prime (before verification) . Let's wait some days and then we'll know".

Why there is secrecy on the PROBABLE NUMBER ?
It seems weird to me ...
Because it would be easy for someone to report the prime as if they were the discoverer, even though it's not verified yet ...
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Old 2005-12-18, 14:27   #83
Jeff Gilchrist
 
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Ok people, the first verification is under way...

It looks like it will take about 16 days to finish using 10CPUs on the Alpha box I have access to. The speed sometimes fluctuates depending on what other people are doing on the machine so it might be slightly longer. I won't say anything about this exponent's size but I have given you enough information in this post to guess. To understand the future, you must look to the past.

Once Tony gets his going, he should finish long before I do.
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Old 2005-12-18, 14:56   #84
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-_- does happy dance for next 10 - 16 days.
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Old 2005-12-18, 14:57   #85
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Quote:
Ok people, the first verification is under way...
Just curious, what software are you using? Mlucas or Glucas?.

Hope the users or your system will ocuped in incoming Christmas better that in managing hard work for the alphas

Guillermo
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Old 2005-12-18, 15:49   #86
Jeff Gilchrist
 
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Quote:
Originally Posted by gbvalor
Just curious, what software are you using? Mlucas or Glucas?.
Glucas of course. I didn't bother getting the latest build since I know the version I have works fine.

Is there a parallel Mlucas now?
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Old 2005-12-18, 15:52   #87
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May 2005

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Quote:
Originally Posted by Jeff Gilchrist
Ok people, the first verification is under way...

It looks like it will take about 16 days to finish using 10CPUs on the Alpha box I have access to. The speed sometimes fluctuates depending on what other people are doing on the machine so it might be slightly longer. I won't say anything about this exponent's size but I have given you enough information in this post to guess. To understand the future, you must look to the past.

Once Tony gets his going, he should finish long before I do.
Well this is good news for those money driven individuals!
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Old 2005-12-18, 17:00   #88
gbvalor
 
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Quote:
Is there a parallel Mlucas now?
I don't know. Many months ago Ernst W. Mayer was working making Mlucas multithreaded. I don't know how is it now. May be Ernst has been a lot busy without time to this stuff, like me.

Guillermo
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