prp42 = 878237210920426389334709220701939431729043 (curve 3 stg2 B1=110000000 sigma=2047491439)

Doing 2k@3M on c115, about half-way through now. With other people's ECM we probably have enough to start sieving. Anyone?
Edit: I started sieving. Not sure how long it will take on my 4 core AMD. If someone can beat me to the factors, go ahead!
Edit: after 2h of sieving I have about 20% of the required relations, so I'd expect factors sometime tomorrow morning CET.
Edit: Linear algebra.

[QUOTE=RobertS;295478]prp42 = 878237210920426389334709220701939431729043 (curve 3 stg2 B1=110000000 sigma=2047491439)[/QUOTE]
I found a factor backwards:
[CODE]Input number is 615702158817819760635542653883150512010483735718746530528638875762563875897339594880206348757497840624461200980780941403301027294015276423 (138 digits)
Using B1=11000000, B2=35133391030, polynomial Dickson(12), sigma=976691395
Step 1 took 35955ms
Step 2 took 16073ms
********** Factor found in step 2: 76435544876663975291311170483388222168221881928179
Found probable prime factor of 50 digits: 76435544876663975291311170483388222168221881928179
Composite cofactor 805518113086... has 88 digits[/CODE]

[QUOTE=akruppa;295482]Doing 2k@3M on c115, about half-way through now. With other people's ECM we probably have enough to start sieving. Anyone?
Edit: I started sieving. Not sure how long it will take on my 4 core AMD. If someone can beat me to the factors, go ahead!
Edit: after 2h of sieving I have about 20% of the required relations, so I'd expect factors sometime tomorrow morning CET.[/QUOTE]

400 6e6, starting 200 11e6

Done, faster than expected.

Need 11e6 on the c147 (i2983). Déjà vu.


There are some nasty combinations (like 2*5^2*7) that drive "up" even within the downdriver. But basically I agree. (Violently.)

[QUOTE=Batalov;295515]Déjà vu.[/QUOTE]

If we keep the down-driver, it will be the last time.

2300 11e6 here. We probably need 2000 more and 2000 of 43e6s and a poly.

[QUOTE=Batalov;295533]2300 11e6 here. We probably need 2000 more and 2000 of 43e6s and a poly.[/QUOTE]

I'm at 370 of 500, I can run another 500 overnight.

[QUOTE=Batalov;295533]2300 11e6 here. We probably need 2000 more and 2000 of 43e6s and a poly.[/QUOTE]I just started some at 43e6; I'll keep running overnight (or until my c132 finishes post :smile:)

[QUOTE=Batalov;295533]and a poly. [/QUOTE]
I'm running poly search on line 2983 now.