Download Prime95 27.9 Build 1

Prime95 27.9 Build 1

Downloaded: 27 times
Software status:
  • dle
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Rated by: 0 users
Publisher: Mersenne GIMPS
Size: 4.1 MB
Operating System: Windows
License: Freeware
Updated: Dec 16, 2012
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Prime95 Description

A program designed to be used to find Mersenne Prime numbers.


Prime95 is a program designed to be used to find Mersenne Prime numbers.


Mersenne numbers can be proved composite (not prime) by either finding a factor or by running a Lucas-Lehmer primality test.


Prime numbers have long fascinated amateur and professional mathematicians. An integer greater than one is called a prime number if its only divisors are one and itself. The first prime numbers are 2, 3, 5, 7, 11, etc. For example, the number 10 is not prime because it is divisible by 2 and 5.


A Mersenne prime is a prime of the form 2P-1. The first Mersenne primes are 3, 7, 31, 127, etc. There are only 40 known Mersenne primes.


There are two ways to use this program. The automatic way uses a central server, which we call the PrimeNet server, to get work to do and report your results. Anyone with Internet access, including AOL, CompuServe, and dial-up ISP users should use this method. You do not need a permanent connection to the Internet.


The second method is the manual method. It requires a little more work

and monitoring. Recommended for computers with no Internet access

or with some kind of firewall problem that prevents the automatic method

from working.
Prime95 Security Information
Downloads2k 100% Clean
Downloads2k tested Prime95 using 3 different antivirus engines and found it 100% Clean, making it safe to install on any computer. Please be aware that this product will be rescanned with every version update and this certification can be removed if found infected.
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