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P-1 factoring is suspended at them moment
As suggested, this thread will provide a candidate file for P-1 factoring. It is available for those who are interested in P-1 factoring for the Cullen/Woodall search.
This is a user driven effort; therefore everyone is encouraged to work together so as not to duplicate each others work. The B1 & B2 bounds have been pre-selected. If you wish to experiment, feel free to search and replace B1 and B2 bounds. Please posts your results if you discover different bounds that provide a more efficient search.
For P-1 factoring discussion, see here.
Submit factors to sieve at primegrid dot com.
Candidate file
None Available at this time
Basic instructions on participating:
1. Download and install prime95. http://www.mersenne.org/freesoft.htm
2. Look through this thread to find the lastest reservation. Then look in the reservations and available candidates page (maintained by popandbob), select a range beyond that. Post your reservation in the thread. Sample reservation:
Reserving Pfactor=3850040-3850968
3. Copy your range from the reservations and available candidates page and paste it into the worktodo.ini file (located in your prime95 directory). Run prime95.
4. Results will be written to the results file. What to look for in the result file (sample output):
3750165*2^3750165-1 completed P-1, B1=500000, B2=6000000, E=12, Wd4: 6145BFBA
[Mon Nov 19 14:10:57 2007]
P-1 found a factor in stage #1, B1=500000.
3750180*2^3750180+1 has a factor: 1219276462562623
[Mon Nov 19 16:21:05 2007]
5. Email the highlighted line to sieve at primegrid dot com.
NOTE: In the above example, 3750165*2^3750165-1 completed with no factor.
6. Post your completion in this thread.
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