Does somebody continue with i5042?
Do we need some ecm on the C140?
yoyo

I am about 2/3 through sieving line 5042.

Now, a c154 in i5053...

I'll run some ECM on it.
yoyo

[QUOTE=yoyo;304827]I'll run some ECM on it.
yoyo[/QUOTE]
I have ran 4500 curves on line 5053 @ B1=8e7, B2=970297861270

And in case anyone wants to sieve, here is the best poly I've found:

[code]# sieve with ggnfs lasieve4 I14e on alg side from Q=10M to 44.25M
# est ~55M raw relations (avg. 0.075 sec/rel C2D @ 3.4GHz)
# aq4788:5053
n: 4971642585436245304199897805331756055600565137800595796541924807311330928440209616093596113532104862769676040335033925797736632789395821441130573387502777
# norm 7.319935e-15 alpha -7.656319 e 3.609e-12 rroots 5
skew: 5010876.48
c0: 38901470682692277686014924063065162624
c1: 177561617447121028456763126761848
c2: 35348168490786629838457703
c3: -14260968711721830002
c4: -1118618692636
c5: 229320
Y0: -464741779151076619911716995751
Y1: 134905220251425821
rlim: 20000000
alim: 20000000
lpbr: 29
lpba: 29
mfbr: 58
mfba: 58
rlambda: 2.5
alambda: 2.5
[/code]

C154_4788_5053 was factored by someone and sequence is advanced to 5056 c143.

[QUOTE=Batalov;308168]C154_4788_5053 was factored by someone and sequence is advanced to 5056 c143.[/QUOTE]
p61 factor of line 5053 was found by yoyo@home:
[url]http://www.rechenkraft.net/yoyo/y_factors_ecm.php[/url]

[QUOTE=jrk;308177]p61 factor of line 5053 was found by yoyo@home:
[url]http://www.rechenkraft.net/yoyo/y_factors_ecm.php[/url][/QUOTE]

Dang, nice hit. Too bad it's almost done sieving in RSALS :razz:

During last night a threw 1500@11e6 at the c143 on i5056.

[QUOTE=Batalov;308168]sequence is advanced to 5056 c143.[/QUOTE]
I found a p50 via ecm:
[code]Using B1=80000000, B2=970297861270, polynomial Dickson(30), sigma=7396671262133668370
Step 1 took 257397ms
Step 2 took 132159ms
********** Factor found in step 2: 27726112512152614091012437650886401627564888513659
Found probable prime factor of 50 digits: 27726112512152614091012437650886401627564888513659
Probable prime cofactor 774400542816425749794501457746540727271775646086386521943702162057522353477124577938249738833 has 93 digits
[/code]

[QUOTE=jrk;308561]I found a p50 via ecm:[/QUOTE]Wow! I never seem to have luck like that....