Welcome to PrimeStats.net! This page provides statistics for public prime-searching projects.

Projects

	PrimeGrid Search for Twin, Proth, Cullen, Woodall, 321, and Sierpinski primes. This project requires a BOINC client. Project Homepage | Statistics
	RieselSieve Attempt to solve the Riesel problem: Finding the smallest k such that k·2n-1 is composite for all natural numbers n. This project requires a BOINC client. Project Homepage | Statistics
	Seventeen or Bust Attempt to prove that 78,557 is the smallest Sierpinksi number, a number k for which k·2n+1 is composite for all natural numbers n. Of the 17 initial Sierpinski numbers, 6 remain to be proven to be prime for some value of n. Project Homepage | Statistics
	Great Internet Mersenne Prime Search Search for primes of the form 2n-1. These primes constitute many of the largest known primes in mathematics, the largest of which contains nearly 13 million digits. Project Homepage | Statistics

News & Updates

PrimeGrid: Tour de Primes 2010 has ended!!! -- March 1, 2010
A very productive month for the Tour de Primes. 309 "Top 5000" primes were discovered, easily surpassing last year's mark of 212. lennart SM5YMT of Sweden and the PrimeSearchTeam once again topped the leader boards winning his second yellow jersey in a row. He also picked up the green jersey for the first time. [SG]marodeur6 of Germany and team SETI.Germany takes home the checkered jersey.For more details about the tour and complete standings, please see this forum post.

PrimeGrid: BEWARE the Ides of March!!! -- March 1, 2010
PrimeGrid's Challenge series continues with the Ides of March Challenge. Once again we observe Caesar's demise by finding factors that will bring some k/n pairs to their demise. A 24 hour (15-16 March) Challenge is being offered on PrimeGrid's Prime Sierpinski Project/Seventeen or Bust (Sieve) application. For more information, please see this forum post.

PrimeGrid: New AP25 Found -- February 25, 2010
A new AP25 (Arithmetic Progression of 25 primes) has been found. It is the 13th discovered. The finder is Keith Pattenden (KWSN - Sir Brian - err sorry - wrong film!) of the United Kingdom. He is a member of the The Knights Who Say Ni! team.The AP25 progression is written as 42592855872841649+19093314*23#*n for n=0..24. It was found by an NVIDIA GeForce GTX 260 in an Intel Core2 Quad 6600 @ 2.40GHz running 32 bit Windows XP Professional. For more details on this find and the AP26 search, please see this forum post.

PrimeGrid: New AP25 Found -- February 24, 2010
A new AP25 (Arithmetic Progression of 25 primes) has been found. It is the 12th discovered. The finder is Bryan Little (mfl0p) of the United States. He is a member of the [H]ard|OC team.The AP25 progression is written as 58555890166091939+10416756*23#*n for n=0..24. It was found by an NVIDIA GeForce GTX 260 in an Intel Core2 Quad @ 2.40GHz running Linux. For more details on this find and the AP26 search, please see this forum post.

PrimeGrid: The Year of the Tiger Challenge -- February 23, 2010
The results are final. Cupid and the Tiger ravaged the primes - bringing in an unprecedented 110 "new" primes to the Prime Pages with over half of those making it into the Top 1000. Over 2M tasks (1M WU's) were completed resulting in over 23M cobblestones awarded...an astounding amount of work done for an LLR Challenge. Congratulations to SETI.USA as the top team and Mr. Hankey as the top individual.Thank you to everyone who participated!!! For more stats and information, please see this forum post.

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