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Old 2010-10-26, 06:49   #122
davieddy
 
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"Lucan"
Dec 2006
England

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Default Two questions

Which two Mersenne numbers are least unlikely to be prime?
Which two would be the quickest to test first time?

Conjecture: the two(+?) computers involved are in a
slow bicycle race; first to win loses.

David

And I do realize that the yawning gap between
31M and 36M is down to the (wishful thinking)
effort to find the first 10M digit prime.

Last fiddled with by davieddy on 2010-10-26 at 07:07
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Old 2021-03-11, 20:34   #123
drkirkby
 
"David Kirkby"
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Quote:
Originally Posted by Prime95 View Post
It is a violation of the source code copyright to use LLR to prove a Mersenne number prime and claim the EFF prize.

In theory, you could find a 10 million digit prime and not report it to the primenet server. Then you could write your own LL test program and file a claim for the prize. Then all you need to do is convince EFF that you wrote an LL testing program when there was a publicly available one, tested one exponent and got lucky. Methinks it would be easier to thank your lucky stars and let GIMPS help you claim half the prize :)
I'm just commenting on this, since I found the post when searching about poaching. It is far from clear to me if the The Electronic Frontier Foundation (EFF) 100 million digit prize

https://www.eff.org/awards/coop

would be awarded to an individual that claimed to write their own code, or even if they used something like Sage or Mathematica and tested it. To quote from their page

"The Electronic Frontier Foundation (EFF), the first civil liberties group dedicated to protecting the health and growth of the Internet, is sponsoring cooperative computing awards, with over half a million dollars in prize money, to encourage ordinary Internet users to contribute to solving huge scientific problems."

I interpret that as meaning the prime has to be discovered on a project like GIMPS, and that working independently would make one ineligible for the prize.

I do find it rather annoying though, when I see some exponents I would like to test, but see someone has them assigned to them, and has not worked on them for more than a year. Several assignments have 0.0% completed, and were allocated several years ago. There was one exponent I was interested in testing, but see someone had been assigned a LL test. They had not done anything, so I tried to get a PRP test of it, but could not get a PRP test manually assigned. There seems to be quite a few exponents just over 100,000,000 digits that have been assigned to someone, who it would seem will never complete the assignment.

Having completed only 22.9% of the exponent 332 646 233, and seeing it is expected to take another 52 days, I can understand why people give up.

https://www.mersenne.org/report_expo...2646233&full=1

That's the first, and probably the last,100 million digit number I will attempt for the forseable future.

I realise your post was about a 10 million digit prize, which has already been claimed. I don't know what the conditions of that prize were, but I don't think one could do the 100 million digit one on ones own.

Dave

Last fiddled with by drkirkby on 2021-03-11 at 21:01 Reason: Because I had nothing better to do.
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Old 2021-03-12, 05:03   #124
LaurV
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Jun 2011
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(this thread is 11 years old, and the post you link is 18 years old).


They will give the money to the individual who make the claim. Find that 100M digit prime. You may get in conflict with the guys who wrote the programs you used, but that is a different story. There is nothing in the EFF regulation which forbid an independent individual to get the prize.
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