Reserved for MF - Sequence 4788

[10metreh]

We've still got that 2^5 * 3

And we've reached 160 digits

I think we've done enough ECM from what's in the database; does anyone want to crack the C134 themselves or shall we make it a team GNFS?

[jrk]

Originally Posted by 10metreh

I think we've done enough ECM from what's in the database; does anyone want to crack the C134 themselves or shall we make it a team GNFS?

No reply. I guess it will be a team sieve, then.

[mdettweiler]

Hi all,

I am pleased to announce that the nplb-gb1.no-ip.org FTP server is back online again. It should be all ready for the next team sieve.

Max

[10metreh]

Originally Posted by mdettweiler

Hi all,

I am pleased to announce that the nplb-gb1.no-ip.org FTP server is back online again. It should be all ready for the next team sieve.

Max

Would you like to do the poly search for the c134?

[Andi_HB]

The best poly from Msieve till now for the c134

R0: -74345499857629306588651703
R1: 526918406537017
A0: 1476115900135771763787951266874992
A1: 626824231219973690300198460
A2: -13207605174359180727636
A3: -12643447556511725
A4: 5363656602
A5: 20400
skew 702726.68, size 6.658692e-013, alpha -6.594295, combined = 4.814539e-011

[mdettweiler]

Originally Posted by 10metreh

Would you like to do the poly search for the c134?

No thanks--I'm afraid my resources are quite tied up at the moment. Right now, going through the available subproject sequences one at a time is all I can handle.

[axn]

Originally Posted by Andi_HB

The best poly from Msieve till now for the c134

R0: -74345499857629306588651703
R1: 526918406537017
A0: 1476115900135771763787951266874992
A1: 626824231219973690300198460
A2: -13207605174359180727636
A3: -12643447556511725
A4: 5363656602
A5: 20400
skew 702726.68, size 6.658692e-013, alpha -6.594295, combined = 4.814539e-011

The best I got from pol51 was a 4.37. I think this one is good enough.

[jrk]

I searched 770-775K with msieve and got a 3.734e-11.

def-nm-params.txt says a "good" poly for c134 is 3.48e-11. So a 4.814e-11 poly must be great. We should start sieving with it.

Suggest these parameters? I did not optimize them:

n: 46334491956043710225938330967034053252570375961099723291677005874807967585788533290212203831083417490921313409294721505021600000357391
Y0: -74345499857629306588651703
Y1: 526918406537017
c0: 1476115900135771763787951266874992
c1: 626824231219973690300198460
c2: -13207605174359180727636
c3: -12643447556511725
c4: 5363656602
c5: 20400
skew: 702726.68
rlim: 10000000
alim: 10000000
lpbr: 28
lpba: 28
mfbr: 56
mfba: 56
rlambda: 2.5
alambda: 2.5

[axn]

Not so fast! We've got competition.

BEGIN POLY #skewness 171420.77 norm 2.86e+018 alpha -6.73 Murphy_E 4.91e-011
X5 519120
X4 -149547362004
X3 22880757084328834
X2 3084767389898150786204
X1 -728499066352347968303249289
X0 -48696807949270208376362448497955
Y1 702872416394437
Y0 -38915962909433205107082626
M 42072142647191243626145050524826061496202553462804199881021111232312303878027902907455010638887626416613882212096551514178349273986581
END POLY

BEGIN POLY #skewness 160469.13 norm 1.80e+018 alpha -6.45 Murphy_E 4.70e-011
X5 519120
X4 -76686274404
X3 10179548269110898
X2 4419407981607320670062
X1 -512845919649890281305746985
X0 -26649405539109601030995687817650
Y1 702872416394437
Y0 -38915943179101604498841599
M 42072142647191243626145050524826061496202553462804199881021111232312303878027902907455010638887626416613882212096551514178349273958510
END POLY

BEGIN POLY #skewness 164341.85 norm 1.87e+018 alpha -6.47 Murphy_E 4.70e-011
X5 519120
X4 -80312327604
X3 10618202363121250
X2 4375833371795537802728
X1 -525133153734057584913310499
X0 -34014987672382883340184185370965
Y1 702872416394437
Y0 -38915944161014370201870088
M 42072142647191243626145050524826061496202553462804199881021111232312303878027902907455010638887626416613882212096551514178349273959907
END POLY

[10metreh]

It's only a C134, so sieving time will be so small (compared to a C157) that I think we should just take the best: anyone want to test the parameters for the 4.91?

[mdettweiler]

FYI: The FTP server will be available, as before, for this team sieve. I've got the directory "c134-relations" all set.