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Old 2012-06-29, 19:54   #1959
yoyo
 
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Does somebody continue with i5042?
Do we need some ecm on the C140?
yoyo
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Old 2012-06-29, 20:13   #1960
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I am about 2/3 through sieving line 5042.
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Old 2012-06-30, 04:13   #1961
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Now, a c154 in i5053...
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Old 2012-07-15, 19:19   #1962
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I'll run some ECM on it.
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Old 2012-07-15, 19:25   #1963
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Quote:
Originally Posted by yoyo View Post
I'll run some ECM on it.
yoyo
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
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Old 2012-08-16, 18:08   #1964
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C154_4788_5053 was factored by someone and sequence is advanced to 5056 c143.
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Old 2012-08-16, 19:02   #1965
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Quote:
Originally Posted by Batalov View Post
C154_4788_5053 was factored by someone and sequence is advanced to 5056 c143.
p61 factor of line 5053 was found by yoyo@home:
http://www.rechenkraft.net/yoyo/y_factors_ecm.php
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Old 2012-08-16, 19:32   #1966
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Quote:
Originally Posted by jrk View Post
p61 factor of line 5053 was found by yoyo@home:
http://www.rechenkraft.net/yoyo/y_factors_ecm.php
Dang, nice hit. Too bad it's almost done sieving in RSALS
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Old 2012-08-17, 04:34   #1967
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During last night a threw 1500@11e6 at the c143 on i5056.
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Old 2012-08-19, 15:49   #1968
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Quote:
Originally Posted by Batalov View Post
sequence is advanced to 5056 c143.
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
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Old 2012-08-20, 03:38   #1969
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Quote:
Originally Posted by jrk View Post
I found a p50 via ecm:
Wow! I never seem to have luck like that....
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