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This wiki is for the Great Internet Mersenne Prime Search (GIMPS), a distributed computing project dedicated to finding Mersenne primes and related prime finding projects.
The largest known prime to date is 2^{82.589.933}  1 (M51) discovered by Patrick Laroche on 20181207. See Mersenne News.
Categories
Categories can be found here.
Special Events
Mathematics
Software
 GIMPS clients  includes the official GIMPS clients Prime95/MPrime
 Primality testing programs
 Factoring programs
 GPU clients
 Various other software
Hardware
Projects
GIMPS  
GIMPS Related Projects  
Lone Mersenne Hunters  100 Million Digit Prefactor Project  Operation Billion Digits 
Other Prime Searching Projects  
12121 Search  27121 Search  PSearch 
Riesel Sieve  Sierpinski/Riesel Base 5  Twin Prime Search 
Riesel Prime Search  Prime Sierpinski Project  No Prime Left Behind 
Other Factoring Projects  
Mersenneplustwo Factorizations  NFSNET  Home Primes Search 
Aliquot Sequences Search (see forum)  ElevenSmooth  Cunningham Tables 
Factoring Database  
Defunct Projects  
MasterPrime 2006  15k Search 
Contributors
Feel free to post your name here and eventually what you've done.
 OmbooHankvald  Making guides, writing wiki, simplifying advanced stuff.
 Numbers  Real easy stuff
 Prime Monster  Easy stuff
 T.Rex  Papin's test  Generalised Fermat Numbers  LLT Digraph
 S80780  GIMPS client files + a little proofreading
 Phil Moore  proof of LucasLehmer test
 Fetofs  Proofreading, linking and easy stuff
 Richard B. Woods ("cheesehead")  Explana, clarifica, correc, and suggestions.
 Jin Du
 Ixfd64  general copyediting
 Sutton Shin  random maintance work.
To all users!
Please remember to create an account and log in to edit pages. You can play around in the Sandbox. Remember that your changes will not be saved until you request and receive an account here.
Unfortunately, account creation by new users is now disabled due to excessive vandalism. However, anyone desiring editing status can request an account on the GIMPS forum.