20040220, 09:33  #1 
11×13×37 Posts 
Things that should be have been SAID more clearly in read.me, help, or site info
1) When you take "factoring" asigment you can Find the Number is NOT PRIME, but you CANNOT FIND IT IS A PRIME ! ... so YOUR CHANCES OF FINDING PRIME IN THAT CASE ARE ~ = 0.
2) In case 1) can you check the number (you did not manage to prove is not prime) and check it with "LL primality test"? I am not sure  please let someone answer that question. 3) When you take "Double checking" asigment YOUR CHANCES OF FINDING PRIME IN THAT CASE ARE ~ = 0. Conclusion: YOU HAVE A CHANCE TO FIND PRIME ONLY IF YOU DO "FIRST TIME PRIMALITY TESTS". ... but that is not said very CLEARLY ... I do not think it is a good thing to hide info in such a public project even though if you think it is for a good cause ... MOST OF THE PEOPLE HERE WANT TO FIND A PRIME, but do not even know that with their assignments They DO NOT HAVE A CHANCE! Peter 
20040221, 01:01  #2 
Aug 2002
Termonfeckin, IE
2,753 Posts 
Did you check this out:
http://www.mersenne.org/works.htm I quote: There are three types of work assigned by the server. PII400 and faster computers get firsttime primality tests. These tests require the most work and have the best chance of finding a new Mersenne prime. Pentium90 and faster computers get doublecheck assignments. These assignments do not take as long and can find a Mersenne prime only if the original test had a problem. The slowest computers are assigned factoring work. This helps by eliminating some exponents for the faster computers. 
20040223, 06:14  #3  
Dec 2003
Team China
2·3^{3} Posts 
Quote:
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20040223, 09:28  #4 
"Gang aft agley"
Sep 2002
2×1,877 Posts 
When I tested my first number, I'd used an unstably overclocked machine and turned in a result that had 51 suminp!=sumout errors during the test.
That result had a high probability of being incorrect. When the last prime number had been found, I was crossing my fingers that it wouldn't be a double check on my mishandled number. I would have found it too embarrassing. Last fiddled with by ewmayer on 20051230 at 21:40 Reason: tidying up thread 
20040223, 20:08  #5  
Sep 2003
Borg HQ, Delta Quadrant
2·3^{3}·13 Posts 
Quote:
Some people actually prefer to do only TFs (such as myself) because in our opinions, LLs and DCs take too darn long. 

20040224, 02:23  #6  
Oct 2003
Australia, Brisbane
2·5·47 Posts 
Quote:


20040224, 03:33  #7 
"Mike"
Aug 2002
7,573 Posts 
I gotta tell you, when I think of P1, I think of Dave...

20040224, 08:43  #8  
2^{2}·7·113 Posts 
Dave  how you can choose only P1 tests ?
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20040224, 11:02  #9  
Dec 2003
Paisley Park & Neverland
5×37 Posts 
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20040224, 11:39  #10  
Oct 2003
Australia, Brisbane
2×5×47 Posts 
I get them from GP2, in the Marin's Mersennearies forum. I just can't wait for the full LL test to complete. I like to come back to my computer each day and find that some tests have been completed. I realise that I will never find a prime, but it is still a good feeling when you find a factor and save someone else from having to do a time consuming LL test.
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20040224, 12:00  #11  
Dec 2003
Paisley Park & Neverland
185_{10} Posts 
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