Fast Breeding (guru management) - Page 98

RichD · 2017-07-10, 15:54

It looks like C190_179743_47 could use a few more rels. 356M seems a little light for a 32-bit job. (Not that I have tried to build a matrix - just comparative to others.)

fivemack · 2017-07-11, 13:18

Quote:

Originally Posted by RichD

It looks like C190_179743_47 could use a few more rels. 356M seems a little light for a 32-bit job. (Not that I have tried to build a matrix - just comparative to others.)

OK, I've stuck in another 10%

swellman · 2017-07-11, 13:19

Can a moderator enqueue some more factorization jobs? There's four candidates listed in this thread.

fivemack · 2017-07-11, 16:20

Quote:

Originally Posted by swellman

Can a moderator enqueue some more factorization jobs? There's four candidates listed in this thread.

OK, I've queued up all four.

henryzz · 2017-07-11, 18:06

Quote:

Originally Posted by fivemack

732541^47-1 (so 732541^48-732541) is I think too hard to be run sensibly with 15e - I'm seeing yields of 700 relations per 1kQ and times of nearly two CPU-seconds per relation on Ivy Bridge.

Is it worth considering this for 16e? It is one of the most wanted numbers for the odd perfect numbers project.

fivemack · 2017-07-12, 15:26

Quote:

Originally Posted by henryzz

Is it worth considering this for 16e? It is one of the most wanted numbers for the odd perfect numbers project.

Definitely worth considering, but I think you have to do that by private-message to frmky rather than by forum discussion (have some 16e trial-sieving numbers available) - he's the only person with access to the 16e queue.

RichD · 2017-07-17, 03:40

I believe this C191 from OPN will work as a 31-bit job.
Sieve on algebraic side.

Code:

n: 19947745549179466411123477180198292576669859696921960022012438887766114836113435875503117706076524895073601628013972733623159871306811064732550107339068794030080752263204318751998659462601577
# 4440731591^23-1, difficulty: 231.54, skewness: 40.54, alpha: 0.00
# cost: 1.9631e+18, est. time: 934.81 GHz days (not accurate yet!)
lss: 0
skew: 40.542
c6: 1
c0: -4440731591
Y1: -1
Y0: 388882228186185917376121079240510820961
m: 388882228186185917376121079240510820961
type: snfs
rlim: 200000000
alim: 200000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7
type: snfs

Trial sieving 5K blocks.

Code:

RichD · 2017-07-24, 16:31

C202 from the t550 file.

Code:

n: 6465390448837521394926324864370323783814800107980963012130724825548754963831603089899418992874702068777335644473069199635219327920458146680289639198885699531837039229760097808711981137156896747009755893
# 386855506153^19-1, SNFS-220, sieve on algebraic side
lss: 0
skew: 0.01027
c6: 386855506153
c0: -1
Y1: -1
Y0: 57895705139974944304896778147443577
rlim: 132000000
alim: 132000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7
type: snfs

Trial sieving 5K blocks.

Code:

swellman · 2017-07-25, 14:56

C165_130_103 is ready for sieving on 14e. Many thanks to Max0526 for finding the polynomial.

Code:

n: 648146241913641179539709408678988102109949241330132355164017105217570355687924132667745695890188640048674250246030149457534565613775349574502641905762758667691825307
Y0: -68968130918178516861525368148175
Y1: 15478263206398516582361
c0: 1358340209127403916341216724804402220
c1: 140154060678905434970517485120092
c2: -195540925968055295222224235
c3: -146751885047497441487
c4: 39502031242530
c5: 4144800
skew: 2180878.51095
# lognorm 51.41, E 44.41, alpha -6.99 (proj -1.99), 5 real roots
# MurphyE=7.18364372e-13
rlim: 130000000
alim: 130000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7

Test sieving on the -a side with Q in blocks of 10,000

Code:

 Q    yield
20M   25758
50M   24043
80M   24361
130M  24624

Suggesting a sieving range of 20M-125M for Q

RichD · 2017-07-25, 16:07

C165 from the t550 file.
Sieve on algebraic side.

Code:

n: 206624234787895127079635689160853271138184247037852040138807151313105472767301151006671925566833211427212893401789666545317553145123303517053270920352192996234823109
# 2745256771^23-1, difficulty: 226.53, skewness: 37.42, alpha: 0.00
# cost: 1.31139e+18, est. time: 624.47 GHz days (not accurate yet!)
lss: 0
skew: 37.419
c6: 1
c0: -2745256771
Y1: -1
Y0: 56797848571005889396690475603943366481
m: 56797848571005889396690475603943366481
type: snfs
rlim: 132000000
alim: 132000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7
type: snfs

Trial sieving 5K blocks.

Code:

fivemack · 2017-07-25, 20:54

Queued up those three

2017-07-10, 15:54	#1068
RichD Sep 2008 Kansas 6500₈ Posts	C190_179743_47 It looks like C190_179743_47 could use a few more rels. 356M seems a little light for a 32-bit job. (Not that I have tried to build a matrix - just comparative to others.)

2017-07-11, 13:19	#1070
swellman Jun 2012 2²·773 Posts	14e queue running dry Can a moderator enqueue some more factorization jobs? There's four candidates listed in this thread.

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2017-07-25, 20:54	#1078
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	Queued up those three