20210926, 23:49  #188  
Jun 2012
3242_{10} Posts 
Quote:


20210927, 02:16  #189  
Sep 2008
Kansas
110110000010_{2} Posts 
Quote:


20210927, 02:21  #190 
Jun 2012
2·1,621 Posts 
Fair enough. We’ll give it a try.

20210927, 04:42  #191 
Jul 2003
So Cal
3^{2}×13×19 Posts 
Should be fine...

20211001, 15:55  #192 
Sep 2009
896_{16} Posts 
QUEUED AS f67_139p1
(67^139+1)/62055102244 from the Brent tables: Code:
# Built Wed Sep 29 08:35:35 2021 # Estimated SNFS difficulty 254, GNFS equivalent 183, GNFS difficulty 244, degree 6 n: 1075523935415411275204466675608087215935250175069394300800048219958532187385744963204857479221254396052454519672324198986726216870896287979817425010800555615110419097485047074683188031661790260206299195252435902162550855481707566211962348804791 type: snfs c6: 67 c0: 1 # Y0 = 67^23 Y0: 999356547346805156075552524294177648535563 # Y1 = 1^0 Y1: 1 # msieve rating: skew 0.50, size 1.265e12, alpha 1.550, combined = 1.407e13 rroots = 0 skew: 0.50 rlim: 134000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 62 mfba: 62 rlambda: 2.6 alambda: 2.6 Test sieving 10k ranges: Code:
Q yield 34M 23816 84M 19861 134M 17369 184M 15346 Last fiddled with by swellman on 20211001 at 16:32 
20211005, 15:38  #193 
Sep 2009
2198_{10} Posts 
QUEUED AS f71_137m1
(71^1371)/41109025419213792793473656534345965241807948175130 from the Brent tables: Code:
# Built Mon Oct 4 17:15:16 2021 # Estimated SNFS difficulty 256, GNFS equivalent 185, GNFS difficulty 205, degree 6 n: 1019662842608870893279160435462321170094406771635193961981429276234229883139295901429550791182148391606220172590982067606138336490250233079150419280985502492608436542713360207264651622323157789449916763023 type: snfs c6: 1 c0: 71 # Y0 = 71^23 Y0: 3792643488006829893221399440992214604544311 # Y1 = 1^0 Y1: 1 # msieve rating: skew 2.03, size 1.651e12, alpha 0.316, combined = 1.665e13 rroots = 2 skew: 2.03 rlim: 134000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 62 mfba: 62 rlambda: 2.6 alambda: 2.6 Test sieving 10k ranges: Code:
Q yield 34M 25750 84M 21705 134M 18641 184M 16923 Last fiddled with by swellman on 20211006 at 12:46 
20211006, 13:44  #194 
Jun 2012
2×1,621 Posts 
5p2_434 will finish ECM later today, at which time I will move it into sieving. Since it was created just prior to f71_137m1, 5p2_434 SHOULD then appear in the sieving queue above f71_137m1, take over sieving priority and thereby maintain the rhythm of this queue, i.e. you should be able to take the LA for f71_137m1.
Last fiddled with by swellman on 20211006 at 13:45 
20211008, 23:38  #195 
Sep 2008
Kansas
2×7×13×19 Posts 
QUEUED AS 122__241_5m1
C203 from the OPN t800 file. Ready for 15e_small. Code:
n: 51187248480875632885122046173993596026025490924689810872203425153229595839071747113861405067219845895527291145193918285628090921039309692681390376122034826571319901877893191104322492759049812658866450271 # 12288381826278378235712063697684697601746915312568569241^51, difficulty: 220.36, skewness: 1.00, alpha: 1.45 # cost: 7.92378e+17, est. time: 377.32 GHz days (not accurate yet!) skew: 1.000 c4: 1 c3: 1 c2: 1 c1: 1 c0: 1 Y1: 1 Y0: 12288381826278378235712063697684697601746915312568569241 type: snfs rlim: 33500000 alim: 33500000 lpbr: 30 lpba: 30 mfbr: 87 mfba: 60 rlambda: 3.5 alambda: 2.6 Code:
Q Yield 18M 8904 20M 9435 50M 9772 80M 8407 90M 8741 Last fiddled with by swellman on 20211009 at 00:00 
20211009, 19:58  #196 
"Curtis"
Feb 2005
Riverside, CA
5069_{10} Posts 
QUEUED AS C199_M31_k35a
Kosta project M31_k35 is ready for 15e: Code:
n: 4950036370987531796596777020435431752821658735009564665203032637182311299258729058872170618265983042169789410985851232822128958988972946232939020745222679656170411937888556774248091592015827689480701 skew: 1.38 c6: 1 c5: 1 c4: 1 c3: 1 c2: 1 c1: 1 c0: 1 Y1: 1 Y0: 45671926060252476630107084286792841360213803007 type: snfs rlim: 134000000 alim: 266000000 lpbr: 32 lpba: 33 mfbr: 92 mfba: 66 rlambda: 3.6 alambda: 2.6 I will sieve Q=3550M locally on a larger siever, and swellman has agreed to handle the matrix. Code:
#Q=50M 3013 rels, 0.251 sec/rel 60 spq #Q=100M 2231 rels, 0.317 sec/rel 54 spq #Q=150M 2080 rels, 0.374 sec/rel 58 spq #Q=200M 1765 rels, 0.412 sec/rel 55 spq #Q=250M 1572 rels, 0.428 sec/rel 51 spq #Q=300M 1493 rels, 0.448 sec/rel 51 spq #Q=350M 1323 rels, 0.500 sec/rel 51 spq #Q=400M 1256 rels, 0.464 sec/rel 45 spq Last fiddled with by swellman on 20211009 at 22:00 
20211011, 16:05  #197 
Sep 2009
2×7×157 Posts 
QUEUED AS f73_136p1
(73^136+1)/29616012945257519556177523571967068839450291555519370813068248905019568642 from the Brent tables: Code:
# Built Fri Oct 8 19:13:09 2021 # Estimated SNFS difficulty 254, GNFS equivalent 183, GNFS difficulty 180, degree 5 n: 871730788736438947212476383490499496690401938741120523812292781811448385558886734225882938975199622268251543221991214291712264804303714368445845410230080771176810635838935757395361 type: snfs c5: 73 c0: 1 # Y0 = 73^27 Y0: 204040896602218382792418993938046358519102576817497 # Y1 = 1^0 Y1: 1 # msieve rating: skew 0.42, size 2.364e17, alpha 0.801, combined = 8.218e14 rroots = 1 skew: 0.42 rlim: 134000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 62 mfba: 62 rlambda: 2.6 alambda: 2.6 Sieve on 15e_small from 34M to 168M on the rational side. Test sieving 10k ranges: Code:
Q yield 34M 16013 84M 17031 134M 17081 184M 15679 NB. What is the Kosta project (wikipedia and duckduckgo came up blank)? I can see the job mentioned here is factoring (2^311)^351 but what else is it doing? Last fiddled with by swellman on 20211011 at 17:46 
20211011, 17:03  #198  
Jun 2012
2·1,621 Posts 
Quote:
There was some forum interest in the project when it was first announced but that has diminished over time. I work on it occasionally, mostly with ECM on my local machines. I look at all the Mersenne primes up to M107 with k<100. Factorization of most of these can only be attempted through ECM. Many will likely never be factored. No idea if others are working at it as well. User @kosta occasionally posts but not in that thread for a long time. I keep a file on my progress. PM me if you’re interested. 

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