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Prime95

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An easy-to-use program specially designed for users who want to search for various Mersenne Prime numbers and run a Lucas-Lehmer primality test. #Prime number  #Mersenne prime  #Find prime  #Mersenne  #Prime  #Number  

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Prime numbers are natural numbers other than 1 that only divide by themselves and the number 1. There are a few mathematical methods to prove the primality of numbers and as of 2011, the largest of them and has approximately thirteen million digits.

The fact that the last world records where calculated within the GIMPS (Great Internet Mersenne Prime Search) network makes all of them Mersenne prime numbers (a positive integer equal to 1 less the power of 2).

Prime95 is the Windows version of the application serving as a client for the GIMPS project. Putting aside the prize and the money involved in finding a new Mersenne number, the application can also deliver a great environment for system stability tests.

Mathematics is the basis of a CPU and that is what they do all day long. Thus, Prime95 can prove to be the perfect tool for checking out both performance and steadiness.

The program's processor stressing capabilities makes it one of the top choices of overclocking enthusiasts when it comes to testing out their new PC configurations. While considered the best in its category by many users, the alternatives comprise Orthos, CPU Free BenchMark, CPU Burn-in or IntelBurnTest.

Prime95 features a `Torture Test` that puts your CPU and RAM to the test primarily for guaranteeing the correct execution of the application on that particular PC. It comes in three variations, from `Small FFTs` to `In-place large FFTs` as well as the cruel `Blend` mode that generates the maximum stress for your system. One thing you have to take into consideration is that you need during the operation is, at all times, a monitoring tool for your computer's temperatures.

The successful pass of the `Torture Test` ensures you of one rock solid computer configuration. The recommended number of hours that you should run this test, if sure of your system's stability, is twenty-four. Beware that your processor will produce a great deal of heat and may even break down due to the extreme FPU (floating point units) utilization. Prime95 also provides a benchmark for your CPU that you can run and compare your results within the community.

This combined Mersenne prime finder / system stability tester software is responsible for many things – from aiding the GIMPS network in finding new prime numbers to frying CPUs. Nevertheless, Prime95 is the real deal when it comes to both aspects of its goals; use it wisely though – look out for temperatures when running its tests and you will get your answer whether you own a fully-stable rig or not.

What's new in Prime95 30.19 Build 13:

  • PRP proofs. This allows GIMPS to double-check a PRP test at less than 1% of the cost of a full PRP test! PRP proofs require lots of temporary disk space. See readme.txt for details. PRP proofs require uploading a large proof file. See readme.txt for details.
  • PRP proof verifications require downloading a modest verification file. See readme.txt for details. Proofs automatically uploaded to server in 30.2.
  • First time LL, World-record LL, 100M-digit LL work preference is deprecated.
  • New resource limits menu choice and dialog box. Consult readme.txt before making changes to these settings. Some options previously in Test/Worker Windows and Options/CPU are moved to the resources dialog box.
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Prime95 30.19 Build 13

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  runs on:
Windows 11
Windows 10 32/64 bit
Windows 8 32/64 bit
Windows 7 32/64 bit
Windows Vista 32/64 bit
Windows XP 32/64 bit
  file size:
7.1 MB
  filename:
p95v3019b13.win32.zip
  9 screenshots:
Prime95 - The application is designed to enable you to find Mersenne prime numbers.Prime95 - You can start or stop the operation, as well as check its status, from the Test menu.Prime95 - It is possible to test the current configuration by accessing the program's Advanced menu.Prime95 - screenshot #4Prime95 - screenshot #5Prime95 - screenshot #6Prime95 - screenshot #7Prime95 - screenshot #8Prime95 - screenshot #9
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