[QUOTE=Dubslow;324756]Hmm... what are the polys it's generating? Does that mean it's not crashing anymore? (Could a mod move these to the yafu bugs thread?)[/QUOTE]

When I run this:

./yafu "snfs(11471^37-1, (11471^37-1)/(11470))" -threads 8

I get this:

nfs: commencing nfs on c151: 1604158774754369095369527255513708288084987926255394489995588072900274434149193480382752963251625180627330279865805719103619804038403082663575924043790
nfs: searching for brent special forms...
total yield: 28841, q=4702037 (0.00253 sec/rel)
Segmentation fault (core dumped)

And then it ends.

Carlos

Ah, so it is producing polys and is even getting to sieving before failing... so maybe it's the siever that's failing?

Can you run the command with -v?

[code]
eduardo@eduardo-SATELLITE-L850-1HZ:~$ ./yafu "snfs(11471^37-1, (11471^37-1)/(2*5*31*37))" -threads 8 -v


01/15/13 00:23:52 v1.33 @ eduardo-SATELLITE-L850-1HZ, System/Build Info:
Using GMP-ECM 6.4.3, Powered by GMP 5.0.4
detected Intel(R) Core(TM) i7-3630QM CPU @ 2.40GHz
detected L1 = 32768 bytes, L2 = 6291456 bytes, CL = 64 bytes
measured cpu frequency ~= 2394.541280
using 20 random witnesses for Rabin-Miller PRP checks

===============================================================
======= Welcome to YAFU (Yet Another Factoring Utility) =======
======= bbuhrow@gmail.com =======
======= Type help at any time, or quit to quit =======
===============================================================
cached 78498 primes. pmax = 999983


>> nfs: checking for job file - no job file found
nfs: checking for poly file - no poly file found
nfs: commencing nfs on c151: 1604158774754369095369527255513708288084987926255394489995588072900274434149193480382752963251625180627330279865805719103619804038403082663575924043790
nfs: searching for brent special forms...
nfs: input divides 11471^37 - 1
gen: ========================================================
gen: considering the following polynomials:
gen: ========================================================

n: 2026820318771232850238860054901018897773791663817557000979720026924963481851034866416737869304199536604897863811255208174972689390481420089
# 11471^37-1, difficulty: 162.38, anorm: -3.49e+31, rnorm: 2.74e+45
type: snfs
size: 162
skew: 207.8037
c4: 1
c0: -1509398240111
Y1: -1
Y0: 39446892596694940551742693403134159615201
m: 39446892596694940551742693403134159615201

n: 2026820318771232850238860054901018897773791663817557000979720026924963481851034866416737869304199536604897863811255208174972689390481420089
# 11471^37-1, difficulty: 154.26, anorm: -3.17e+20, rnorm: 1.11e+43
type: snfs
size: 154
skew: 0.0966
c4: 11471
c0: -1
Y1: -1
Y0: 3438836421994154001546743387946487631
m: 3438836421994154001546743387946487631

n: 2026820318771232850238860054901018897773791663817557000979720026924963481851034866416737869304199536604897863811255208174972689390481420089
# 11471^37-1, difficulty: 162.38, anorm: -3.49e+37, rnorm: 3.55e+37
type: snfs
size: 162
skew: 71.4698
c5: 1
c0: -1509398240111
Y1: -1
Y0: 299785234242363699899463288984961
m: 299785234242363699899463288984961

n: 2026820318771232850238860054901018897773791663817557000979720026924963481851034866416737869304199536604897863811255208174972689390481420089
# 11471^37-1, difficulty: 158.32, anorm: -1.29e+29, rnorm: 1.69e+35
type: snfs
size: 158
skew: 0.0238
c5: 131583841
c0: -1
Y1: -1
Y0: 26134184835006860770592214191
m: 26134184835006860770592214191


gen: ========================================================
gen: best 3 polynomials:
gen: ========================================================

n: 2026820318771232850238860054901018897773791663817557000979720026924963481851034866416737869304199536604897863811255208174972689390481420089
# 11471^37-1, difficulty: 154.26, anorm: -3.17e+20, rnorm: 1.11e+43
# scaled difficulty: 162.08, suggest sieving rational side
type: snfs
size: 154
skew: 0.0966
c4: 11471
c0: -1
Y1: -1
Y0: 3438836421994154001546743387946487631
m: 3438836421994154001546743387946487631

n: 2026820318771232850238860054901018897773791663817557000979720026924963481851034866416737869304199536604897863811255208174972689390481420089
# 11471^37-1, difficulty: 158.32, anorm: -1.29e+29, rnorm: 1.69e+35
# scaled difficulty: 167.46, suggest sieving rational side
type: snfs
size: 158
skew: 0.0238
c5: 131583841
c0: -1
Y1: -1
Y0: 26134184835006860770592214191
m: 26134184835006860770592214191

n: 2026820318771232850238860054901018897773791663817557000979720026924963481851034866416737869304199536604897863811255208174972689390481420089
# 11471^37-1, difficulty: 162.38, anorm: -3.49e+37, rnorm: 3.55e+37
# scaled difficulty: 174.56, suggest sieving rational side
type: snfs
size: 162
skew: 71.4698
c5: 1
c0: -1509398240111
Y1: -1
Y0: 299785234242363699899463288984961
m: 299785234242363699899463288984961

nfs: guessing snfs difficulty 154 is roughly equal to gnfs difficulty 116
nfs: guessing snfs difficulty 158 is roughly equal to gnfs difficulty 118
nfs: guessing snfs difficulty 162 is roughly equal to gnfs difficulty 120

test: generating factor bases
test: fb generation took 0.6737 seconds
test: commencing test sieving of polynomial 0 on the rational side over range 4700000-4702000
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
FBsize 328419+0 (deg 4), 328963+0 (deg 1)
total yield: 28841, q=4702037 (0.00255 sec/rel)
141 Special q, 1005 reduction iterations
reports: 36382097->5126785->4713897->3443486->2995691->2649547
Number of relations with k rational and l algebraic primes for (k,l)=:

Total yield: 28841
0/0 mpqs failures, 15826/22734 vain mpqs
milliseconds total: Sieve 24930 Sched 0 medsched 11630
TD 21440 (Init 710, MPQS 11130) Sieve-Change 15480
TD side 0: init/small/medium/large/search: 230 1290 380 740 2150
sieve: init/small/medium/large/search: 350 4540 480 6250 650
TD side 1: init/small/medium/large/search: 400 1420 370 910 1580
sieve: init/small/medium/large/search: 570 4350 440 6350 950
test: new best score of 0.002555 sec/rel
test: estimated total sieving time = 1h 6m 48s (with 8 threads)
test: yield greater than 3x/spq, lowering siever version

test: generating factor bases
test: fb generation took 0.8260 seconds
test: commencing test sieving of polynomial 1 on the rational side over range 5100000-5102000
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
FBsize 354981+0 (deg 5), 354970+0 (deg 1)
total yield: 18280, q=5102059 (0.00361 sec/rel)
133 Special q, 1005 reduction iterations
reports: 39065974->4919416->4553852->2449821->2020235->1756914
Number of relations with k rational and l algebraic primes for (k,l)=:

Total yield: 18280
0/0 mpqs failures, 13870/9987 vain mpqs
milliseconds total: Sieve 23690 Sched 0 medsched 11020
TD 15440 (Init 650, MPQS 7100) Sieve-Change 15780
TD side 0: init/small/medium/large/search: 310 1120 460 780 1320
sieve: init/small/medium/large/search: 440 4450 450 5910 820
TD side 1: init/small/medium/large/search: 260 890 310 840 1330
sieve: init/small/medium/large/search: 470 4050 450 6010 640
test: score was 0.003620 sec/rel
test: estimated total sieving time = 1h 34m 39s (with 8 threads)

test: generating factor bases
test: fb generation took 0.8591 seconds
test: commencing test sieving of polynomial 2 on the rational side over range 5500000-5502000
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
FBsize 380947+0 (deg 5), 380799+0 (deg 1)
total yield: 3889, q=5502041 (0.01410 sec/rel)
127 Special q, 641 reduction iterations
reports: 20792000->1569895->1449984->606348->492951->412806
Number of relations with k rational and l algebraic primes for (k,l)=:

Total yield: 3889
0/0 mpqs failures, 3092/2291 vain mpqs
milliseconds total: Sieve 21530 Sched 0 medsched 10910
TD 6190 (Init 250, MPQS 1540) Sieve-Change 16230
TD side 0: init/small/medium/large/search: 430 480 410 660 380
sieve: init/small/medium/large/search: 370 4080 350 5510 500
TD side 1: init/small/medium/large/search: 330 300 400 640 340
sieve: init/small/medium/large/search: 330 3900 380 5780 330
test: score was 0.014159 sec/rel
test: estimated total sieving time = 6h 10m 12s (with 8 threads)
test: test sieving took 197.31 seconds

gen: ========================================================
gen: selected polynomial:
gen: ========================================================

n: 2026820318771232850238860054901018897773791663817557000979720026924963481851034866416737869304199536604897863811255208174972689390481420089
# 11471^37-1, difficulty: 154.26, anorm: -3.17e+20, rnorm: 1.11e+43
# scaled difficulty: 162.08, suggest sieving rational side
type: snfs
size: 154
skew: 0.0966
c4: 11471
c0: -1
Y1: -1
Y0: 3438836421994154001546743387946487631
m: 3438836421994154001546743387946487631

nfs: guessing snfs difficulty 154 is roughly equal to gnfs difficulty 116
nfs: commencing rational side lattice sieving over range: 2385000 - 2390000
nfs: commencing rational side lattice sieving over range: 2365000 - 2370000
nfs: commencing rational side lattice sieving over range: 2350000 - 2355000
nfs: commencing rational side lattice sieving over range: 2360000 - 2365000
nfs: commencing rational side lattice sieving over range: 2370000 - 2375000
nfs: commencing rational side lattice sieving over range: 2380000 - 2385000
nfs: commencing rational side lattice sieving over range: 2355000 - 2360000
nfs: commencing rational side lattice sieving over range: 2375000 - 2380000
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
Warning: lowering FB_bound to 2384999.
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
Warning: lowering FB_bound to 2359999.
Warning: lowering FB_bound to 2364999.
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
Warning: lowering FB_bound to 2379999.
Warning: lowering FB_bound to 2354999.
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
Warning: lowering FB_bound to 2369999.
Warning: lowering FB_bound to 2349999.
gnfs-lasieve4I13e (with asm64): L1_BITS=15, SVN $Revision: 399 $
Warning: lowering FB_bound to 2374999.
FBsize 328419+0 (deg 4), 174915+0 (deg 1)
FBsize 328419+0 (deg 4), 173562+0 (deg 1)
FBsize 328419+0 (deg 4), 174252+0 (deg 1)
FBsize 328419+0 (deg 4), 175264+0 (deg 1)
FBsize 328419+0 (deg 4), 173214+0 (deg 1)
FBsize 328419+0 (deg 4), 172872+0 (deg 1)
FBsize 328419+0 (deg 4), 173911+0 (deg 1)
FBsize 328419+0 (deg 4), 174577+0 (deg 1)
total yield: 20949, q=2386667 (0.00426 sec/rel)



[/code]

I think now it is running....

Carlos

11471^37-1
 

I'll let it run through the night the 11471^37-1 from composites page of OP.

Just a quick note... you could also do yafu "nfs(11471^37-1)" and it will remove the algebraic factors automatically (in your case just 11470). the snfs(form, cofactor) function is mostly for when there are known non-algebraic factors such as those found by ecm.

[QUOTE=pinhodecarlos;324763]I'll let it run through the night the 11471^37-1 from composites page of OP.[/QUOTE]

I didn't run it because too much heat here in Brazil. I'm going to try it again in the fresh morning...

Edit: I can't...laptop cpu temps reaches 100 ºC, idle cores at 58 ºC!!!! Can't help. Unreserve 11471^37-1.

[QUOTE=pinhodecarlos;324796]I didn't run it because too much heat here in Brazil. I'm going to try it again in the fresh morning...

Edit: I can't...laptop cpu temps reaches 100 ºC, idle cores at 58 ºC!!!! Can't help. Unreserve 11471^37-1.[/QUOTE]

I'll take it. It was -15C here this morning so heat is definitely not an issue :)

11471^37-1

[CODE]PRP78 = 479919453522719678701326964384071638384795569078561760013197236308176851466851
PRP54 = 659764522602077743376337633409998146360609360420969711[/CODE]

[QUOTE=Dubslow;324634]
I've just started 200029^37-1 [/QUOTE]

[url]http://factordb.com/index.php?query=200029%5E37-1[/url]

P52*P140

[QUOTE=wblipp;324691] Offlist, Ryan Propper has recently factored over 30 of Pascal's most heavily weighted roadblocks below 200 digits. I'll post more about this in the not-too-distant future..[/QUOTE]

Could you produce a list of roadblocks sorted by (weight of roadblock)/(estimated time to factor)? That would say which are most worth factoring.

Chris

[QUOTE=bsquared;324764]Just a quick note... you could also do yafu "nfs(11471^37-1)" and it will remove the algebraic factors automatically (in your case just 11470). the snfs(form, cofactor) function is mostly for when there are known non-algebraic factors such as those found by ecm.[/QUOTE]

Just a question, yafu runs the LA phase, correct?