LLR results from the automated users:
PRP results from the automated users:

As of February 2, 2006, we have tested:

12498 numbers for PRP testing
3964 numbers for LLR testing

5185 for PRP testing
2445 for LLR testing

TOTAL: 24092

We "expect" one prime per every 18629 numbers.

Manual PRP candidates tested per person:
Bob: 4321
Boudewijn: 2141
Brian: 1890
Rommel: 1253
Heiner: 1217
Thomas: 350
William (myself): 313
Benoit: 292
Ken: 210
Nathan: 189
Shane: 85
Whilden: 78
Jean: 57
Mike: 51
Craig: 18
Tommy and Xyzzy: 10 each
Vaughan: 5
Pavlos, Ralph: 4 each

Manual LLR candidates tested per person:
Boudewijn: 1599
Rommel: 1445
Heiner: 874
Nathan: 46

Here is a stats page created by Boudewijn Edeling:

We have a forum for our project, located over here:

********************Update Section********************

Wednesday, May 22, 2002
New prime number found by Bob Cousins
At this date, it is the 15th largest prime number,
and the 2nd largest proth prime number
Tuesday, March 12, 2002
New prime number found by Bob Cousins
At this date, it is the 84th largest prime number
Sunday, February 17, 2002
New prime number found by Robert van der Peijl
At this date, it is the 330th largest prime number

Monday, February 11, 2002
Start of our group effort.

********************End of Updates********************

Current Group Members

Past Group Members

final sieved input.txt file (to 1500 trillion)
final sieved base.txt file (to 1500 trillion)
manual results

Hi everyone, welcome to PSearch.
This is a group effort, and everyone can contribute. If you are interested, you can e-mail me at:
with your processor type, megahertz speed, and whether you are running Windows or Linux. We already used David Underbakke's TwinGen to sieve and George Woltman's PRP to test for probable primes.
We are now using Jean Penne and George Woltman's:
which is faster and proves outright primality.
Thanks a lot for all the hard work from everyone participating!
The largest prime numbers list can be found at Chris Caldwell's site at:

Check out my Nikon 1 V1 JPEG Burst Mode - Philadelphia video over here:

E-mail me: William Garnett III