Reserved for MF - Sequence 4788 - Page 134

akruppa · 2012-01-14, 23:48

If you did 7000@44M and 5500@110M already, it's time to stop ECM and to start looking for a polynomial. I did another ~1000@44M here so far.

RichD · 2012-01-15, 01:03

Where is jrk when you need him? He comes up with some of the best polys.

jrk · 2012-01-15, 01:49

Quote:

Originally Posted by RichD

Where is jrk when you need him? He comes up with some of the best polys.

I'll post one by tomorrow

akruppa · 2012-01-15, 04:28

This is what I got with CADO so far, after searchin 1/4 of the proposed search length:

Code:

# /ufs/kruppa/cado-nfs-1.1-RC5/build/pidgey.pna.cwi.nl//polyselect/polyselect2 -q -kmax 25 -incr 30030 -admin 0 -admax 200000000 -degree 5 -maxnorm 48.7 -t 1 100000
# Initializing primes took 1ms
# Tried 6660 ad-value(s), found 889 polynomial(s), 20 below maxnorm
# potential collisions=1.13e+03 (2.20e-01/s)
# best logmu: 46.85 47.33 47.66 47.66 47.74 47.81 48.19 48.22 48.33 48.39
# Total phase took 5153.77s
n: 429277684954121394813422187749189045233252715220675732389611040151522593868963683035384720260595974399002374247125295377293926247838643737190293927843
skew: 141760.000
# lognorm: 48.07, alpha: -6.82 E=41.25
# Murphy's E(Bf=10000000,Bg=5000000,area=1.00e+16)=4.16e-12
c5: 112552440
c4: 56498047731994
c3: 10636367348344460659
c2: -2154667295744034144611234
c1: -46795479420098489335085286606
c0: -6358821065971945895700364097496303
Y1: 1763652201127
Y0: -20714606119241218423970191838
m: 392491080660317669180028037964838401073066155249179927872282843937679271571986439895186505836807460649157814882710296198845337728044091927343534129827
# generated by b325e6e: /ufs/kruppa/cado-nfs-1.1-RC5/build/pidgey.pna.cwi.nl//polyselect/polyselect2 -q -kmax 25 -incr 30030 -admin 0 -admax 200000000 -degree 5 -maxnorm 48.7 -t 1 100000 in 5153.77s

Judging by the other polynomials' Murphy score, this seems to be a pretty far outlier; the second best polynomial has a score of 3.5e-12. I'll finish the other 3/4 of the search.

Edit: finished the search but did not find anything better.

jrk · 2012-01-15, 07:54

current best: (using latest msieve GPU)

Code:

Edit: deleted as per request

Although I expect closer to 6e-12 with more effort. But if anyone wants to start on sieving, be my guest.

Batalov · 2012-01-15, 10:30

Quote:

Originally Posted by akruppa

This is what I got with CADO so far, after searchin 1/4 of the proposed search length:

Code:

# Murphy's E(Bf=10000000,Bg=5000000,area=1.00e+16)=4.16e-12

...

msieve gauges size 1.160e-14, alpha -6.822, combined = 4.607e-12 rroots = 1 for this one. (Just to be sure to compare apples to apples. If cado-nfs will produce a 5.4e-12, that would be as good as 6e-12 in msieve.)

jrk · 2012-01-15, 10:35

Code:

Edit: deleted as per request

edit: still running poly search for several more hours but feel free to start sieving this poly. RSALS?

jrk · 2012-01-15, 18:02

Code:

# sieve with ggnfs lasieve4 I14e on alg side from Q=8M to ??? (not completed)
# aq4788:2864
n: 429277684954121394813422187749189045233252715220675732389611040151522593868963683035384720260595974399002374247125295377293926247838643737190293927843
# norm 1.792057e-14 alpha -8.037412 e 6.038e-12 rroots 1
skew: 1306475.69
c0:  214908009559587306593785542266030152
c1:  929214552266747520591256982462
c2:  253789725595123464400862
c3:  9328486332206420599
c4: -927067067574
c5:  292824
Y0: -68112450209164394866751341767
Y1:  43236795456461179
rlim: 16000000
alim: 16000000
lpbr: 29
lpba: 29
mfbr: 58
mfba: 58
rlambda: 2.5
alambda: 2.5

mods can please delete the earlier two polys I posted if they desire.

debrouxl · 2012-01-15, 19:59

Well, RSALS is currently on a low activity period...

Let's say I can queue it (as usual, starting at the bottom of the range) tomorrow morning if fivemack, bsquared or others are not willing to do a unilateral sieve by then ?

LaurV · 2012-01-16, 03:07

Sadistic remark: Now depending of how the C150 splits, there is a nice chance to get my favorite driver, 2^3*3*5 ....
(and I can hear the echoes: Booo!!! Shut up!! Go to hell!! etc...

)

Batalov · 2012-01-16, 06:18

The c150 is -1 (mod 4), so no, not at this iteration.

2012-01-15, 07:54	#1468
jrk May 2008 3·5·73 Posts	current best: (using latest msieve GPU) Code: Edit: deleted as per request Although I expect closer to 6e-12 with more effort. But if anyone wants to start on sieving, be my guest. Last fiddled with by akruppa on 2012-01-15 at 20:09

2012-01-15, 10:35	#1470
jrk May 2008 10001000111₂ Posts	Code: Edit: deleted as per request edit: still running poly search for several more hours but feel free to start sieving this poly. RSALS? Last fiddled with by akruppa on 2012-01-15 at 20:09 Reason: adding params

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2012-01-14, 23:48	#1464
akruppa "Nancy" Aug 2002 Alexandria 2,467 Posts	If you did 7000@44M and 5500@110M already, it's time to stop ECM and to start looking for a polynomial. I did another ~1000@44M here so far.

2012-01-15, 01:03	#1465
RichD Sep 2008 Kansas 2⁶·53 Posts	Where is jrk when you need him? He comes up with some of the best polys.

2012-01-15, 19:59	#1472
debrouxl Sep 2009 977 Posts	Well, RSALS is currently on a low activity period... Let's say I can queue it (as usual, starting at the bottom of the range) tomorrow morning if fivemack, bsquared or others are not willing to do a unilateral sieve by then ?

2012-01-16, 03:07	#1473
LaurV Romulan Interpreter Jun 2011 Thailand 2⁶×151 Posts	Sadistic remark: Now depending of how the C150 splits, there is a nice chance to get my favorite driver, 2^335 .... (and I can hear the echoes: Booo!!! Shut up!! Go to hell!! etc... )

2012-01-16, 06:18	#1474
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 9,497 Posts	The c150 is -1 (mod 4), so no, not at this iteration.