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-   -   Reserved for MF - Sequence 4788 (https://www.mersenneforum.org/showthread.php?t=11615)

Batalov 2009-06-23 19:12

It morphed into 2[SUP]5[/SUP] * 3
Bummer! :sad:

jrk 2009-06-24 04:26

A poly for the c133:

[code]n: 2683707943146349562594913594368740338601585630194076012340326110184392613944024472013854299982635985994208438381006903892356157576267
# norm 7.175371e-13 alpha -7.032243 e 4.896e-11
skew: 340207.35
c0: 220447390434500974223511645135405
c1: 2904318470965874020216051696
c2: 19002076953846866514443
c3: -70418254980845816
c4: -315214246008
c5: 293760
Y0: -24668965982194073654364148
Y1: 642550403627239
rlim: 10000000
alim: 10000000
lpbr: 28
lpba: 28
mfbr: 56
mfba: 56
rlambda: 2.5
alambda: 2.5
[/code]

Shall we make a team sieve of it or does someone want to take it alone?

schickel 2009-06-24 06:24

[QUOTE=Batalov;178617]It morphed into 2[SUP]5[/SUP] * 3
Bummer! :sad:[/QUOTE]Bad, but not disastrous....at least it's not the driver. The c133 makes it kinda nice, too.

schickel 2009-06-24 06:27

[QUOTE=jrk;178647]A poly for the c133:
<snippity>
Shall we make a team sieve of it or does someone want to take it alone?[/QUOTE]I'll throw in some CPU time if it's a team job. I've got 3 SNFS jobs in my pipeline that I can put off a little....

henryzz 2009-06-24 06:28

if no one claims it by this evening it will be a team sieve

fivemack 2009-06-24 17:37

Run 388 out of 1000:
Using B1=10000000, B2=35132741290, polynomial Dickson(12), sigma=3382755867
Step 1 took 53455ms
********** Factor found in step 1: 88373238977310581080739438230179037711853
Found probable prime factor of 41 digits: 88373238977310581080739438230179037711853
Probable prime cofactor 30367880301811492056466046252344450173362667610608986764253700680964865962194016382618838039 has 92 digits

(another 1000@1e7 on the other core of that machine finished without result)

Currently running 2x1000@1e7 on the C129 of 2419; results tomorrow evening

henryzz 2009-06-24 17:38

[quote=fivemack;178729]Run 388 out of 1000:
Using B1=10000000, B2=35132741290, polynomial Dickson(12), sigma=3382755867
Step 1 took 53455ms
********** Factor found in step 1: 88373238977310581080739438230179037711853
Found probable prime factor of 41 digits: 88373238977310581080739438230179037711853
Probable prime cofactor 30367880301811492056466046252344450173362667610608986764253700680964865962194016382618838039 has 92 digits

(another 1000@1e7 on the other core of that machine finished without result)

Currently running 2x1000@1e7 on the C129 of 2419; results tomorrow evening[/quote]
thank you

fivemack 2009-06-24 18:04

Run 17 out of 1000:
Using B1=10000000, B2=35132741290, polynomial Dickson(12), sigma=1243555911
Step 1 took 53048ms
Step 2 took 27474ms
********** Factor found in step 2: 3819627744841045633763167711966392293449
Found probable prime factor of 40 digits: 3819627744841045633763167711966392293449
Probable prime cofactor 38660873208570819794500633296917762712062378249423725061586686009144937647689395700561613 has 89 digits

henryzz 2009-06-24 18:40

[quote=fivemack;178735]Run 17 out of 1000:
Using B1=10000000, B2=35132741290, polynomial Dickson(12), sigma=1243555911
Step 1 took 53048ms
Step 2 took 27474ms
********** Factor found in step 2: 3819627744841045633763167711966392293449
Found probable prime factor of 40 digits: 3819627744841045633763167711966392293449
Probable prime cofactor 38660873208570819794500633296917762712062378249423725061586686009144937647689395700561613 has 89 digits[/quote]
also a nice result:smile:

jrk 2009-06-24 19:36

Line 2420 cofactor:

[code]Using B1=3000000, B2=5706890290, polynomial Dickson(6), sigma=3944710087
Step 1 took 7913ms
Step 2 took 4095ms
********** Factor found in step 2: 7750028045411158946557578572254773307
Found probable prime factor of 37 digits: 7750028045411158946557578572254773307
Probable prime cofactor 109565870207105400323440452413834928006878979932220284688027280315169513356210038361477771 has 90 digits
[/code]

jrk 2009-06-24 19:58

Line 2421 cofactor:

[code]Using B1=3000000, B2=5706890290, polynomial Dickson(6), sigma=768155566
Step 1 took 7969ms
Step 2 took 4403ms
********** Factor found in step 2: 190431080913976704860818639728300686557
Found probable prime factor of 39 digits: 190431080913976704860818639728300686557
Probable prime cofactor 204522606372200186975999518399003917395671633812465359496470444180956996556509658617978604220713 has 96 digits
[/code]


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