ARGOMENTO:

Mmm in base a cosa si dimostra che è un fattore?

Per alcuni progetti di PG, il sieving è fatto attraverso BOINC, per altri ci sono client esterni a BOINC che fanno il lavoro.

Sinceramente non so dirti l'algoritmo matemnatico usato per dimostrare che un dato numero sia un fattore.

la fattorizzazione dei numeri credo che sia quanto di più complesso esista in matematica..

la crittografia non si basa su questo?

2008-10-01 17:15 UTC
We have just received a notice that the datacenter where PrimeGrid and BOINCstats are located are going to do planned maintenance on the electrical grid that is powering everything, so we will have an outage starting 23:00UTC. The outage is planned to last at least 3 hours. Sorry for the inconvenience; you may wish to cache a little more work this evening.

2008-10-03 16:50 UTC
In a review yesterday of the Cullen/Woodall Project status, it was determined that we are at "optimal" sieve depth...actually, a little beyond it. Therefore, we are stopping the 32 bit and 64 bit Cullen/Woodall Sieve applications and archiving the sieve. Cullen/Woodall LLR will remain active up to n=10M. For more information, please see this forum post .

Qualcuno che mi chiarisce?

Cito testualmente dal post www.primegrid.com/forum_thread.php?id=650

Minimally, optimal sieve depth means sieving to a point in which the time it takes to find a factor p is the same as the time it takes to LLR test an n.

Chiarissimo

2008-10-23 18:10 UTC
We are planning a scheduled downtime of several hours on Monday, October 27. We will be relocating PrimeGrid and BOINCstats servers to the new rack, and will add a new server for PrimeGrid, which has been purchased using funds from the recent donation drive.

2008-10-27 20:30 UTC
While I'm writing these lines, the database is already running on the shiny new server in the new rack. While Murhpy has definitely played his role today, we hope that all troubles are gone and everything will be running smooth from now on.

The first minutes seem promising, and the speed has improved significantly. We'll keep you posted.

Big thanks for Willy for his work on the servers, and to all donators who helped make this server a reality!

Beh, complimenti a PrimeGrid per il nuovo server

The Prime Time Challenge
2008-10-31 04:00 UTC
PrimeGrid's Challenge series continues with the Prime Time Challenge (14-16 November 2008). It's high time we initiated the new server and what better way to do it than with a Challenge. Also, it's time to return to the thrill of finding primes...and for that, we turn to PrimeGrid's newest project, the Proth Prime Search.

Currently, these tests are rather short so this will also give us a good opportunity to "stress" test and fine tune the new server. The Proth Prime Search is slowly working its way up to the "reportable" prime level in Chris Caldwell's The Largest Known Primes Database!

So please come join us as we initiate the new server and bring the Proth Prime Search to the "reportable" prime level. For more information, please see this forum thread .

Preparing for the Prime Time Challenge
2008-11-01 03:30 UTC
The key to an effective prime search is having a good sieve file. For the past several months, our primary focus has been on getting the PPS Sieve deep enough to start LLRing. While we have made great strides in this effort, we still need more help. Leading up to this Challenge, anyone with a 64 bit multiple core system is encouraged to join the Proth Prime Search sieving effort. Please see this post if you are interested.

ciao ragazzi, potete spiegarmi come mai in un pc dove elaboro ho pochissime WU da elaborare mentre negli altri due ne ho tante.
Non vorrei che in quello che ne ho poche le finisco e non elaboro più.
Attendo vs. delucidazioni.
Ho fatto un paio di volte " aggiorna " ma niente!!!
Come mai??

Kaar ha scritto:

ciao ragazzi, potete spiegarmi come mai in un pc dove elaboro ho pochissime WU da elaborare mentre negli altri due ne ho tante.
Non vorrei che in quello che ne ho poche le finisco e non elaboro più.
Attendo vs. delucidazioni.
Ho fatto un paio di volte " aggiorna " ma niente!!!
Come mai??

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Sorry!!

2008-11-09 04:30 UTC
Less than a week remains until the 48hr Prime Time Challenge (14-16 November 2008). Come help us initiate the new server and maybe find a prime large enough to enter into Chris Caldwell's The Largest Known Primes Database! The Challenge will highlight PrimeGrid's newest project, the Proth Prime Search. For more information, please see this forum thread.

Less than 24 hours remain until the Prime Time Challenge (14-16 November 2008). The initiation process is already warming up as the load increases on the Proth Prime Search (LLR) in advance of the start. We are approaching the "reportable" level in Chris Caldwell's The Largest Known Primes Database! Come help us reach it and find a prime for yourself.For more information, please see this forum thread.

The Prime Time Challenge
2008-11-14 21:00 UTC
The Prime Time Challenge has been canceled. While the server is fine, we are having issues that we are not yet able to resolve. We sincerely apologize for this. More information to come when we have it.

While the Challenge as been canceled (will be rescheduled) we will continue keeping stats for the current dates (14-16 November). The reason for this is that we want to continue to stress the server so we can see the impact on different server related issues. This will help us better prepare for the Prime Time Challenge (Reloaded). :)For those who are interested, please continue to crunch Proth Prime Search LLR through 16 Nov 2008 18:00 UTC. The results will be unofficial but the process will help us greatly. Thanks for the consideration and again, we apologize for the cancelation.

voi che conoscete il progetto... mi indicate una buona spiegazione da inserire nella pagina di approfondimento ?