2+ table

[R.D. Silverman]

307    2    1091    +    328.4    0.934
288    2    1097    +    330.2    0.872
225    2    1109    +    333.8    0.67
253    2    1115    +    268.5    0.942    /5q
338    2    1123    +    338.0    1
330    2    1129    +    339.8    0.97
223    2    1135    +    273.3    0.815    /5q
248    2    1139    +    342.8    0.723
317    2    1147    +    345.2    0.918
236    2    1151    +    346.4    0.68
306    2    1153    +    347.0    0.881
318    2    1159    +    348.8    0.911
297    2    1163    +    350.0    0.848
334    2    1187    +    357.3    0.934
232    2    1205    +    290.1    0.797    /5q
282    2    1213    +    365.1    0.77    
230    2    1223    +    368.1    0.7  
358    2    1231    +    370.5    0.964    
279    2    1241    +    373.5    0.745    
334    2    1249    +    375.9    0.887    
379    2    1259    +    378.9    0.998    
302    2    1261    +    350.3    0.86    /13
314    2    1271    +    382.6    0.819    
329    2    1273    +    383.2    0.857    
371    2    1283    +    386.2    0.959    
292    2    1285    +    309.4    0.941    /5q
334    2    1289    +    388      0.859    
284    2    1291    +    388.6    0.729    
330    2    1297    +    390.4    0.843    
_______________________________________

318    2    1084    +    326.3    0.974
271    2    1108    +    333.5    0.812
311    2    1124    +    338.3    0.919
247    2    1136    +    341.9    0.722
326    2    1168    +    351.6    0.927
249    2    1180    +    284.1    0.876    /5q
330    2    1208    +    363.6    0.906    
263    2    1216    +    366        
216    2    1240    +    298.6    0.721    /5q
312    2    1256    +    378      0.823    
287    2    1276    +    349.1    0.82    /11q
284    2    1288    +    332.3    0.853    /7
320    2    1292    +    388.9    0.821    
264    2    1300    +    288.9    0.911    /5q/13

Originally Posted by garo

Please note that the main database for 2+ (but not 2,LM numbers) numbers is maintained by George Woltman at http://www.mersenne.org/report_ECM/
The tables are provided here solely for the sake of completion and for reporting curves on 2L and 2M numbers. It is recommended that all curves for 2+ numbers listed here be sent to George Woltman only.

Thanks for the heads up! I agree that we should send data to only one source.

BTW, I posted a lot of trials on 2 L,M that were not inserted into these
tables.

I recommend STRONGLY to people that they NOT do trials at the 35 digit level.

BTW, Peter Montgomery and CWI have done a lot of trials on base 12. You
might want to check with them as to their level of effort.

Bob

[xilman]

Originally Posted by R.D. Silverman

Thanks for the heads up! I agree that we should send data to only one source.

BTW, I posted a lot of trials on 2 L,M that were not inserted into these
tables.

I recommend STRONGLY to people that they NOT do trials at the 35 digit level.

BTW, Peter Montgomery and CWI have done a lot of trials on base 12. You
might want to check with them as to their level of effort.

Bob

Thanks for your heads up too. I'll drop Peter and/or Herman an email.

Paul

[garo]

Yeah sorry, I've been a bit slow in getting stuff updated. Been busy at work. I have all the records and everything will eventually be updated. And Paul is sending me all the latest info he gets :)

[geoff]

I found this p43 with mprime 23.9 today:

ECM found a factor in curve #452, stage #1
Sigma=8143069045401381, B1=11000000, B2=11000000.
M1786 has a factor: 1513038588606647037924377544619001786660891

It completes the factorisation of 2,893+.

[R.D. Silverman]

Originally Posted by geoff

I found this p43 with mprime 23.9 today:

ECM found a factor in curve #452, stage #1
Sigma=8143069045401381, B1=11000000, B2=11000000.
M1786 has a factor: 1513038588606647037924377544619001786660891

It completes the factorisation of 2,893+.

Nicely done. This result illustrates that there are still factorizations that
can be found with only moderate effort within the base 2 Cunningham tables.

Let's push to finish 2- and 2+ to the 45 digit level (B1 = 11M).

[garo]

Yup, I'll report them to George/PZ. I'm updating the tables today :)

[smh]

Originally Posted by garo

Yup, I'll report them to George/PZ. I'm updating the tables today :)

Did you update the tables? If you did, can you delete the posts which you incorporated in the tables?

You might want to look for a few more people to update the tables, or would this mess up your local tables?

[garo]

I would love to get some more help on this. I did an internal update back in March but never got around to doing the final sanity check and posting on the forums. Partly because splitting my internal tables and posting on the forums - where the 2+ table as you can see is spread out over 10 posts, is very cumbersome and I've not really had a solid block of 2-3 hours to do this since March. But if someone wants to help me, they are most welcome.

[geoff]

Originally Posted by garo

But if someone wants to help me, they are most welcome.

If it would help to have someone to update the forum threads from data in another format, I could do that.

[R.D. Silverman]

Originally Posted by akruppa

I've done ~600 GMP-ECM curves at B1=11M on 2,760+, 0.13 of p45, 0.017 of p50.
Reported only here.

Alex

Hi,

2,760+ was finished at the 45 digit level.....You might want to check
George's pages. They have been recently updated.

I am about 93% done with sieving for 2,737+. I then plan to do 2,749+
and 2,791+.

NFSNET will do the (now C166!) of 2,751+. It would be nice to put some
effort into the 1st two holes, 2,719+ and 2,736+ at the 50 digit level....

Meanwhile, Bruce Dodson is making the rest of us look bad..... (OTOH I have
only 3 PCs)

[akruppa]

Oh, right... I hadn't checked. They can still be counted as ~330 B1=44M, B2=4.29G curves, though.

Yeah, it's hard to compete with 80 AMD64 boxes running an optimized GMP beta version...

Alex