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Project description

PrimeGrid's goal is to bring the excitement of prime numbers finding by downloading and installing BOINC and join to the PrimeGrid project. PrimeGrig play a central role in the cryptographic systems which are used for computer security. Through the study of prime numbers it can be shown how much processing is required to crack an encryption code.

Recent RSS entries

  • Perseid Challenge starts 12 August 18:00
    The night sky can offer some wonderful sights, like distant ...

    Perseid Challenge starts 12 August 18:00

    The night sky can offer some wonderful sights, like distant stars and planets, the milkyway but also meteor showers. The perseids are a prolific meteor shower associated with the comet Swift-Tuttle. To celebrate this wonderful sight, PrimeGrid is running a challenge on the Riesel Problem Sieve subproject. It will start on 12 august 2014 at 18:00 UTC and will run until 14 august 2014, 18:00 UTC. We hopen to welcome many of you in this fun challenge and if you have any questions or just want some banter, please do join us in this thread on our forums.
    Created: Aug. 5, 2014, 7:33 p.m. (modified): Aug. 5, 2014, 7:33 p.m.

  • 27 Mega Prime
    On 17 July 2014, 2:36:47 UTC, PrimeGrid’s 27121 Prime Search, ...

    27 Mega Prime

    On 17 July 2014, 2:36:47 UTC, PrimeGrid’s 27121 Prime Search, through PRPNet and in collaboration with the 12121 Search (k=27 sister project), has found the mega prime: 27*2^4542344-1 The prime is 1,367,384 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 47th overall. The discovery was made by Scott Brown (Scott Brown) of the United States using an AMD Phenom(tm) II X6 1055T Processor with 4GB RAM, running Microsoft Windows 7 Enterprise. . This computer took just over 8 hours 25 minutes to complete the primality test using LLR. Scott is a member of the Duke University Team. For more details, please see the official announcement.
    Created: Aug. 6, 2014, 12:56 a.m. (modified): Aug. 6, 2014, 12:56 a.m.

  • New SR5 Mega Prime!
    On 23 July 2014, 5:52:51 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 ...

    New SR5 Mega Prime!

    On 23 July 2014, 5:52:51 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=24032 by finding the mega prime: 24032*5^1768249+1 The prime is 1,235,958 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 54th overall. This is the largest known base 5 mega prime. 39 k's now remain in the Sierpinski Base 5 Problem. The discovery was made by Hiroyuki Okazaki (zunewantan) of Japan using an Intel Xeon CPU E31220 @ 3.10GHz with 4GB RAM running Microsoft Windows Server 2008. This computer took about 3 hours and 16 minutes to complete the primality test using LLR. Hiroyuki is a member of the Aggie The Pew team. The prime was verified on 23 July 2014, 8:30:46 UTC, by Vincent Ollivier (MohMan) of Canada using an Intel Core i7-3770 CPU @ 3.40GHz with 8 GB RAM running Microsoft Windows 7 Professional. This computer took about 6 hours and 38 minutes to complete the primality test using LLR. Vincent is a member of the SUPINFO team. For more details, please see the official announcement.
    Created: Aug. 6, 2014, 2:10 a.m. (modified): Aug. 6, 2014, 2:10 a.m.

  • New MEGA prime found!
    On 24 July 2014, 3:59:36 UTC, PrimeGrid’s Mega Prime Search ...

    New MEGA prime found!

    On 24 July 2014, 3:59:36 UTC, PrimeGrid’s Mega Prime Search found the Mega Prime: 129*2^3328805+1 The prime is 1,002,073 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 98th overall. The discovery was made by Eric Clifton (Grandpa) of the United States using an Intel Core i7-2700K CPU @ 3.50GHz with 16GB RAM running Microsoft Windows 7 Professional. This computer took about 46 minutes 7 seconds to complete the primality test using LLR. Eric is a member of the [H]ard|OCP team. In addition to being verified internally, the prime was also verified on 27 July 2014, 3:34:11 UTC, by Vladislav Ketamino (ThrasherX-17) of the Ukraine using a Genuine Intel CPU @ 1.60GHz with 8 GB RAM running Microsoft Windows 7 Ultimate. This computer took about 2 hours and 18 minutes to complete the primality test using LLR. Vladislav is a member of the Keep The Fire Alive! team. For more details, please see the official announcement.
    Created: Aug. 7, 2014, 12:12 a.m. (modified): Aug. 7, 2014, 12:12 a.m.

  • New MEGA prime and World Record Fermat Divisor!
    On 24 July 2014, 8:47:48 UTC, PrimeGrid’s Mega Prime Search ...

    New MEGA prime and World Record Fermat Divisor!

    On 24 July 2014, 8:47:48 UTC, PrimeGrid’s Mega Prime Search found a world record prime Fermat divisor: 193*2^3329782+1 Divides F(3329780) The prime is 1,002,367 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 1st for prime Fermat divisors and 98th overall. It is also a new record for "weighted" prime Fermat divisors. The discovery was made by Raymond Ottusch (RaymondFO*) of the United States using an Intel Core i7-3930K CPU @ 3.20GHz with 12 GB RAM running Microsoft Windows 7 Professional. This computer took about 1 hour 11 minutes to complete the primality test using LLR. Raymond is a member of the Sicituradastra. team. In addition to being verified internally, the prime was also verified on 28 Jul 2014, 5:02:21 UTC by John Christy (John Christy) of the United States using an Intel Xeon CPU E31220 @ 3.10GHz with 8 GB RAM running Linux. This computer took about 1 hour and 24 minutes to complete the primality test using LLR. John is a member of the USA team. For more details, please see the official announcement.
    Created: Aug. 8, 2014, 4:39 p.m. (modified): Aug. 8, 2014, 4:39 p.m.

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Supported platforms

  • linux-32-bitDistributed computing supported client platform. Linux (32-bit) PrimeGrid can run on Linux (32-bit).
  • linux-64-bitDistributed computing supported client platform. Linux (64-bit) PrimeGrid can run on Linux (64-bit).
  • mac-os-x-1040Distributed computing supported client platform. Mac OS X (10.4.0+) PrimeGrid can run on Mac OS X (10.4.0+).
  • windows-2000xpvista7-32-bitDistributed computing supported client platform. Windows 2000/XP/Vista/7 (32-bit) PrimeGrid can run on Windows 2000/XP/Vista/7 (32-bit).
  • windows-2000xpvista7-64-bitDistributed computing supported client platform. Windows 2000/XP/Vista/7 (64-bit) PrimeGrid can run on Windows 2000/XP/Vista/7 (64-bit).

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