[b]QUEUED AS C216_49852639_29[/b]
C216 from the OPN MWRB file with OPN weight of 5661.
[ a.k.a. Phi_29(Phi_3(25457)/13)) ]
[CODE]n: 342979604182615255258693254421748108228322604383289993800565370414344839359283788981547172276819546740023979366342120920148747230565238271359993792909152771442330156630035414193369265772093168266608867254556175688641
# 49852639^29-1, difficulty: 230.93, skewness: 19.18, alpha: 0.00
# cost: 1.86984e+18, est. time: 890.40 GHz days (not accurate yet!)
skew: 19.184
c6: 1
c0: -49852639
Y1: -1
Y0: 307922032948643297482606520455058607199
type: snfs
rlim: 67000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.7
alambda: 2.7[/CODE]
Trial sieving 5K blocks.
[CODE] Q Yield
20M 12157
60M 8724
100M 7662
150M 6143
200M 5781[/CODE]

[b]QUEUED AS C173_386xx483_19[/b]
C173 from the OPN t600 file.
3867675755483^19-1
[ a.k.a. Phi_19(Phi_11(571)/419/2277499309493)/1559/1203689/p17/p29 ]
[CODE]n: 17091144404057182526808435052712333380560284935301487306675211495551817989135893565600385540258585226003866292895782708444388831056595759837645167391205220793744645983786599
lss: 0
Y0: -1619121272013358595378455472009581
Y1: 19673607520425629
c0: -51746507260284830003952304704720236217360
c1: 33638379090035788565523931883203484
c2: 2508601890567450534849189180
c3: -688238768371918957227
c4: -22967109342062
c5: 1535940
skew: 11663713.92
alim: 134000000
rlim: 134000000
lpba: 31
lpbr: 31
mfba: 91
mfbr: 62
alambda: 3.7
rlambda: 2.6[/CODE]
Trial sieving 5K blocks.
[CODE] Q Yield
16M 12331
20M 13967
60M 10251
100M 8553
150M 7071[/CODE]

[b]QUEUED AS C209_34939_47[/b]
C209 from the OPN MWRB file.
[CODE]n: 98241296356084241168465133942857655218108719499892028963843575639947634153532790082339484776012645540154633301616671788679252980954603143610382231030892059409649271581721911881081892203568018552709101405348781
# 34939^47-1, difficulty: 218.08, skewness: 5.72, alpha: 0.00
# cost: 6.56386e+17, est. time: 312.56 GHz days (not accurate yet!)
skew: 5.718
c6: 1
c0: -34939
Y1: -1
Y0: 2220668672819138726094113295527117281
type: snfs
rlim: 16500000
alim: 33500000
lpbr: 29
lpba: 29
mfbr: 95
mfba: 58
rlambda: 3.5
alambda: 2.5[/CODE]
Trial sieving 5K blocks.
[CODE] Q Yield
12M 11775
20M 10083
30M 8457
40M 7659
50M 6564[/CODE]

[b]QUEUED AS C172_480xx101_19[/b]
C172 from the OPN t600 file
4803254465101^19-1
[ a.k.a. Phi_19(Phi_5(Phi_13(13)/53/264031)/41/53738676221)/191/229/571/647/p14/p16/p18 ]
[CODE]n: 8245431342914464023882827935494086187821878748058975298095515171766807453757181718262089511955741262519519122612538524772998015646496281807715779842794381343825847653605133
lss: 0
Y0: -1500434184009980038595371361170385
Y1: 23809464692332303
c0: -105405614055385218855588236802168464707824
c1: 89357342365588305212738197964151534
c2: -3543433465302039830331554514
c3: -2626275133912673124997
c4: 3287054877958
c5: 1084248
skew: 15341897.20
alim: 134000000
rlim: 134000000
lpba: 31
lpbr: 31
mfba: 91
mfbr: 62
alambda: 3.7
rlambda: 2.6[/CODE]
Trial sieving 5K blocks.
[CODE] Q Yield
20M 12928
60M 8756
100M 8654
150M 8085[/CODE]

[QUOTE=RichD;493030]C209 from the OPN MWRB file.
[CODE]
lpbr: 29
lpba: 29
mfbr: 95
mfba: 58
rlambda: 3.5
alambda: 2.5[/CODE]
[/QUOTE]
mfbr of 95 on a 29LP task? 3.3 large primes? If this isn't a typo or two, I am very curious how these settings came about.

Corrected
 

C209 from the OPN MWRB file.
[CODE]n: 98241296356084241168465133942857655218108719499892028963843575639947634153532790082339484776012645540154633301616671788679252980954603143610382231030892059409649271581721911881081892203568018552709101405348781
# 34939^47-1, difficulty: 218.08, skewness: 5.72, alpha: 0.00
# cost: 6.56386e+17, est. time: 312.56 GHz days (not accurate yet!)
skew: 5.718
c6: 1
c5: 0
c4: 0
c3: 0
c2: 0
c1: 0
c0: -34939
Y1: -1
Y0: 2220668672819138726094113295527117281
m: 2220668672819138726094113295527117281
type: snfs
rlim: 16500000
alim: 33500000
lpbr: 29
lpba: 29
mfbr: 85
mfba: 58
rlambda: 3.6
alambda: 2.5[/CODE]
Trial sieving 5K blocks.
[CODE] Q Yield
12M 12046
20M 10134
30M 8515
40M 7703
50M 6592[/CODE]

[b]QUEUED AS C243_149_53[/b]
C243_149_53 is ready for SNFS on 15e.
[code]
n: 748995589879561846375212636726920309814480837316761441042249690745990335428226270431061137780447681421280504079631456771057518667163753646445855702585507839791216254182671308797860294592280551078384053790004252622570970587847362768578828595477
# 149^53+53^149, difficulty: 260.37, anorm: 1.78e+038, rnorm: -1.39e+049
# scaled difficulty: 262.18, suggest sieving rational side
# size = 4.033e-013, alpha = 0.882, combined = 6.112e-014, rroots = 0
type: snfs
size: 260
skew: 1.1880
c6: 53
c0: 149
Y1: -12790771483610519443342791266451996229460693
Y0: 36197319879620191349
rlim: 268000000
alim: 268000000
lpbr: 32
lpba: 32
mfbr: 64
mfba: 64
rlambda: 2.8
alambda: 2.8
[/code]


Test sieving on the -r side with Q in blocks of 5k:
[code]
Q=40M 15466
Q=70M 13667
Q=120M 13006
Q=180M 11048
Q=250M 10519
[/code]
Suggesting a sieving range for Q of 40-230M with a target number of relations = 470M

[b]QUEUED AS C154_M31_k78[/b]
C154_M31_k78 from the kosta project is ready for GNFS, if it is not too simple a task for 14e. Just trying to feed the hungry grid.
[code]
n: 7082204369817702280087195885920892869283015272680507742430103692549231128957198054316157199151149816547329382712403410413479451917483027673558041543802819
skew: 5460952.45
c0: 23263486785403880872099456862879599243
c1: 47787450085421484375544215073451
c2: -20886381511901308960931369
c3: -2150488533789039467
c4: 664792614286
c5: 48336
Y0: -681050864955612674664313859370
Y1: 324652063903483
# size 5.661e-15, alpha -6.633, combined = 3.143e-12 rroots = 5
rlim: 33500000
alim: 33500000
lpbr: 29
lpba: 29
mfbr: 58
mfba: 58
rlambda: 2.5
alambda: 2.5
[/code]


Test sieving on the -a side with Q in blocks of 10K
[code]
Q=15M 19856
Q=30M 18054
Q=50M 14671
[/code]
Which fell out nicely, suggesting a range for Q of 15-50M with a target number of relations = 60M.

[b]QUEUED AS C194_599182669_23[/b]
C194 from the MWRB file with OPN weight of 4536.
[ a.k.a. Phi_23(Phi_3(42397)/3) ]
[CODE]n: 12773307000250161043341422327008947461002549083473770090304844716449457701893441571183676983273731326221672466234139051006232922584747470324720732635765553494441500814788207683476842440733562531
# 599182669^23-1, difficulty: 210.66, skewness: 29.04, alpha: 0.00
# cost: 3.52714e+17, est. time: 167.96 GHz days (not accurate yet!)
skew: 29.035
c6: 1
c0: -599182669
Y1: -1
Y0: 128895267650763720238753652587800721
type: snfs
rlim: 33500000
alim: 67000000
lpbr: 30
lpba: 30
mfbr: 60
mfba: 60
rlambda: 2.6
alambda: 2.6[/CODE]
Trial sieving 5K blocks.
[CODE] Q Yield
16M 17141
20M 16772
60M 10986[/CODE]

Odd Sieving Behavior
 

[B]Ignore post - see updated poly[/B] [url=http://www.mersenneforum.org/showpost.php?p=493485&postcount=1552]here[/url]
[b]IGNORED AS INSTRUCTED[/b]

C243_139_70 seems ready to sieve on 15e, but I had a crash using the more recent ggnfs sievers on a Window 7 machine. Using the older sievers worked flawlessly. I do not understand why this is happening, maybe it's only a problem with Windows? The original crash happened using Yafu, but it was a ggnfs-arg(sp?) crash. Attempting to sieve it directly with the ggnfs executable quickly (< 1 minute) resulted in exit with zero yield though there was no crash reported.

Experienced the same behavior with the related polynomial c5/c1 = 16/35.

Obviously if this is going to be a problem with BOINC or NFS@Home, then it should not be queued.

I can attempt to find another polynomial entirely, say a sextic, though they be kind of ugly for this composite.

[code]
n: 174560496051579384039709377914520269677588995197425947455510105846472367794264794419625632372286184806030043728872665589817371631402925079825795745875213473370580158374288173855002701184132755506635657731564443345486569072217529816451128946571
# 139^70+70^139, difficulty: 259.22, anorm: 4.73e+031, rnorm: 2.13e+057
# scaled difficulty: 263.49, suggest sieving rational side
# size = 9.275e-018, alpha = 0.000, combined = 4.511e-014, rroots = 1
type: snfs
size: 259
skew: 2.339
c5: 1
c0: 70
Y1: -1005095210669462420559310325641
Y0: 4599865365447399609768010000000000000000000000000000
rlim: 268000000
alim: 268000000
lpbr: 32
lpba: 32
mfbr: 64
mfba: 64
rlambda: 2.8
alambda: 2.8
[/code]


Test sieving on the -r side with Q in blocks of 5K with the older sievers:
[code]
Q=40M 10583
Q=70M 11363
Q=120M 12671
Q=180M 11768
Q=250M 12099
[/code]
Shifting the range upward a bit, the suggested sieving range for Q is 50M-245M with the target number of relations = 465M.

[b]QUEUED AS C228_23827_53[/b]
C228 from the MWRB file with an OPN weight of 6020.
[CODE]n: 405158727069586612066451362861616351788202754107454976650042519513176468103143244292632262898001176374717182265003039291783889940323576544729014274699183636507724244717427232606476324809111302453739895130462222978479110970987641
# 23827^53-1, difficulty: 236.36, skewness: 5.36, alpha: 0.00
# cost: 2.87989e+18, est. time: 1371.38 GHz days (not accurate yet!)
skew: 5.364
c6: 1
c0: -23827
Y1: -1
Y0: 2475279718335771100812217009015247235187
type: snfs
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.6
alambda: 2.6[/CODE]
Trial sieving 5K blocks.
[CODE] Q Yield
18M 11760
20M 11935
60M 8987
100M 8301
150M 6654[/CODE]