Topic: Team Prime Rib

Congratulations to Garo for passing 1000 P90 CPU years. That is a massive amout of CPU time. :-D

dweick, of TPR, has passed 1000 P90 CPU years! Another huge performance by a TPR cruncher. Congratulations to him and TPR is well deserved.:-D

Due to dweick, and other team members, TPR is now a very short step away from taking back the Number 1 position in the GIMPS project.

As the second TPR member, Reboot_It passed 2000 P90 CPU years!!!. That is a fantastic achievement.

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DSheets reaches 2000 P90 CPU years!!!. That is a fantastic achievement. An indication of how large DSheets' production is, is that he would have been in 15th place for overall production in the project just by himself.

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A new Largest Known Prime Number!!!

A new Mersenne Prime number, M41, has been discovered and verified by The Great Internet Mersenne Prime Search project or GIMPS as it is called. The newly discovered Mersenne Prime number is 2^24,036,583-1, or 2 to the 24,036,583rd power minus 1. It is nearly a million digits larger than the previous largest known prime number.

The new Mersenne, 2^24,036,583-1 has 7,235,733 decimal digits, (Warning: very large file, 3,504,354 bytes) and is currently the largest known prime number.

It was discovered by Josh Findley, on May 15th 2004, using prime95 on his office computer. He used a 2.4 GHz Pentium 4 Windows XP PC running for 14 days prove the number. Findley is an independent IT consultant living in Issaquah, Washington. He joined GIMPS in June 1999.

The new prime was independently verified by Tony Reix of Grenoble, France using half of a Bull NovaScale 5000 HPC running Linux on 16 Itanium II 1.3 GHz CPUs for five days using the Glucas program by Guillermo Ballester Valor of Granada, Spain, and by Jeff Gilchrist (DigitalParasite of Ars) of Elytra Enterprises Inc. in Ottawa, Canada using eleven days of time on a HP rx5670 quad Itanium II 1.5 GHz CPU server at SHARCNET. The discovery is the seventh record prime found by the GIMPS project. In recognition of every GIMPS contributor's effort, credit for this new discovery will go to "Findley, Woltman, Kurowski, et al".

Findley, a consultant to the National Oceanic and Atmospheric Administration (NOAA) in La Jolla, California, described the find. "I'm still surprised at the discovery. Even after five years running GIMPS on my computers, I didn't expect to find a new Mersenne prime! I joined GIMPS because it seemed the logical choice for using my spare CPU cycles."

A new possible Mersenne Prime has been found. This would be the 41st Mersenne Prime number and the largest so far. To quote a couple of messages from George Woltman :

So far the result looks genuine. It was run using version 23 by a top 1000 contributor. If proven correct it will be another world record for GIMPS!!

BTW, it is a new prime. The user sent in his save file. I reran the final 15,000 iterations and prime95 rediscovered the prime. There is no known method for creating a bogus save file that falsely rediscovers the prime.

I've given fewer hints than in the past because you readers are so good at sleuthing! However, the 10 million digit question is important to many folks. So......the new Mersenne prime is NOT ten million digits.

Yahoo has an AP article interviewing <FONT size=2>Michael Shafer. He's the guy that found the largest known prime.

As for his own standing in the world of mathematics, "I don't think I'm going to be recognized as I go down the street or anything like that."

A new Mersenne Prime number, M40, has been discovered and verified by The Great Internet Mersenne Prime Search project or GIMPS as it is called. The newly discovered Mersenne Prime number is 2^20,996,011-1, or 2 to the 20,996,011th power minus 1.

It was discovered by Michael Shafer, on 17-Nov-03 19:04, using prime95 on his office computer. He used a 2 GHz Pentium 4 Dell Dimension PC running for 19 days to prove the number prime.

The new prime was independently verified by Guillermo Ballester Valor of Granada, Spain using twelve days of time on a 1.4GHz quad Itanium II server at the HP Test Drive center, and by Ernst Mayer of Cupertino, California using three weeks of time on a 1 GHz HP Alpha workstation.

Account ID      LL P90*  Exponents  Fact.P90  Exponents  P90 CPU
                CPU yrs  LL Tested  CPU yrs*  w/ Factor  hrs/day
--------------  -------  ---------  --------  ---------  -------
Team_Prime_Rib  14999.8    19351     1590.16     3303    63656.5

To quote from a post by George Woltman from a thread on the Mersenne forum, on the possible new Mersenne Prime M40 Again!!!!:

I've just downloaded the server logs. There is a report of a new Mersenne prime!!! It looks like it was found using a post-M40-false-alarm prime95 since the error code was reported: 00000000.

Team Prime Rib (TPR) is currently involved in an epic struggle. They are about to lose their 1st place position as the Top Primality Test Producers. To help fight off the challenge from the second placed team, Curtisc, TPR is looking for new members.