Queue management for 16e queue - Page 3

jyb · 2020-11-19, 20:54

Quote:

Originally Posted by swellman

Quote:

Originally Posted by axn

# 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.

jyb · 2020-11-23, 04:34

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.

fivemack · 2021-01-21, 15:27

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

fivemack · 2021-01-29, 08:52

The few thousand curves found a factor, I've deleted the job and started running curves on L2250

fivemack · 2021-02-04, 15:30

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.

2021-01-29, 08:52	#26
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 6383₁₀ Posts	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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2021-01-21, 15:27	#25
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 13·491 Posts	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

2021-02-04, 15:30	#27
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 14357₈ Posts	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.