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Old 2020-11-19, 20:54   #23
jyb
 
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Quote:
Originally Posted by swellman View Post
Quote:
Originally Posted by axn View Post
# 131^106+106^131, difficulty: 267.34
# 131^106+106^131, difficulty: 269.37

I don't get this part. IIUC, for getting the sextic, the number had to be multiplied by 131^2*106, whereas for the quintic, there is no such fiddling necessary. So the sextic difficulty should be 6 digits larger.
Output by Yafu. With SNFS it cranks out dozens of potential polynomials then downselects to the best three for test sieving. Perhaps B^2 can shed more light on the various steps of that Kabuki dance.
Indeed, I don't understand the values Yafu is printing. My calculations show the quintic with a difficulty of 265.32 and the sextic with a difficulty of 271.57, so there's axn's 6 digits right there.
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Old 2020-11-23, 04:34   #24
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QUEUED AS 8p3_834M

SNFS-251.06 (quartic) C220 HCN (8+3,834M), ECM to t60.
Code:
n: 4106609588424447396996222513379693412003124266674309491729863520838604405098468326525117796586140070117851619915391156765666063208322467227650127948824324948835330331474513772746013914096270530047953563697353232926629461
skew: 1.22474
c4: 4
c3: 12
c2: 18
c1: 18
c0: 9
Y1: 834385168331080533771857328695283
Y0: -411376139330301510538742295639337626245683966408394965837152256
rlim: 225000000
alim: 225000000
lpbr: 32
lpba: 32
mfbr: 94
mfba: 62
rlambda: 3.6
alambda: 2.6
Trial sieving 2K blocks.
Code:
 Q		Yield
---		-----
50M		2816
90M		3438
130M		3539
170M		3299
210M		3673
250M		3585
290M		3703
330M		3421
Recommend sieving special Q on rational side, 50M - 310M.

Last fiddled with by swellman on 2020-11-23 at 11:17
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Old 2021-01-21, 15:27   #25
fivemack
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I've put L3065B (SNFS quartic, no small factor known) onto the 16fs queue. Not quite sure how much ECM has been done on it; it won't get to the front of the queue any time soon so I'll run a few thousand curves at B1=260M on my GTX1080
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Old 2021-01-29, 08:52   #26
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The few thousand curves found a factor, I've deleted the job and started running curves on L2250

Last fiddled with by fivemack on 2021-01-29 at 10:17
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Old 2021-02-04, 15:30   #27
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6400 curves at B1=260M found no factor for L2250; I've queued up the job while post-processing a further 3840 curves. It looks rather low yield even for an SNFS-250 quartic, but 300MQ ought to get there.
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Old 2021-04-23, 19:26   #28
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Default HCN 3+2_1758L

QUEUED AS 3p2_1758L

3p2_1758L from the Homogeneous Cunningham project, ready for GNFS on 16f.

Code:
n: 1734147512979270320827767012217086906506556317798760101066642797284407332516993027773365157763102197607514963117947733088678302843725492651987691057475083298632139047698473602163355874115229
# norm 1.768320e-18 alpha -6.842932 e 2.201e-14 rroots 5
lss: 0
skew: 34619080.46
c0: -82717367334817895153685976600674902106038703
c1: 24230002666061859616959799270512489908
c2: 2098794365094139007789717181182
c3: -69148370343514243109752
c4: -1784626917919455
c5: 14642100
Y0: -2598343318530561190088419286201562362
Y1: 328301570246391373
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 91
rlambda: 2.6
alambda: 3.4
Test sieving on the -a side with Q in blocks of 10k
Code:
50M   17458
70M   19075
100M  17788
150M  15621
150M  15621
200M  15220
250M  12661
Suggesting a Q-range of 50-210M.

Last fiddled with by swellman on 2021-05-28 at 12:46
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Old 2021-04-30, 05:44   #29
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Sean, can you please check if the poly for 6p5_1110L is correct, people are complaining about these tasks all fail to complete. Thank you.
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Old 2021-04-30, 13:03   #30
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Quote:
Originally Posted by pinhodecarlos View Post
Sean, can you please check if the poly for 6p5_1110L is correct, people are complaining about these tasks all fail to complete. Thank you.
I did find an issue - an extraneous line at the end of the .poly file. I do not have rights to edit a number in sieving, which is probably a good thing. I’ve asked Greg to intercede.
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Old 2021-04-30, 16:06   #31
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Greg has reset 6p5_1110L. Turns out Windows clients ignore the error but Linux clients fail, resulting in a lot of noise.

Apologies to all.
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Old 2021-04-30, 16:27   #32
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Quote:
Originally Posted by swellman View Post
I did find an issue - an extraneous line at the end of the .poly file. I do not have rights to edit a number in sieving, which is probably a good thing. I’ve asked Greg to intercede.
Extraneous line or no, more than 60,000 work units have been successfully returned, resulting in over 170M unique relations. Does it really make sense to kill this job entirely and start over?

At the very least, can't the existing relations be preserved and we can start the sequel job at the point where this one left off? It looks like it managed to get to special-q values of about 77M.
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Old 2021-04-30, 18:42   #33
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Yes, that's an option. The relations are still available and valid. You will likely have about 1/2 - 2/3 of the jobs below the leading edge done. You can start sieving at 75M or so and extend at the end if necessary.
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