Low Weight    

This project is to find large primes on low weight candidates, of the form k*2^n-1.

Started: August 20, 2004
Last update: Mar 22, 2007

Titan Primes found on this project:

            3817*2^218917-1 on Sep 2, 2004 Jocelyn Larouche
209826493*2^1071303-1 on Sep 21, 2004 Thomas Ritschel
          12791*2^308026-1 on Sep 30, 2004 Jocelyn Larouche
209826493*2^1140855-1 on Nov 16, 2004 Thomas Ritschel
  80857169*2^1251076-1 on Dec 12, 2004 Thomas Ritschel
          64387*2^243001-1 on Jan 5, 2005 Marcin Lipinski
          27253*2^370867-1 on Nov 17, 2005 Karsten Bonath

        399239*2^253688-1 on Mar 28, 2006 Mike Curtis 

        411793*2^233819-1 on July 12, 2006 by Templus

[x] working on it ... (x) Done to x by and is available

k is 10^3
M is 10^6
G is 10^9
T is 10^12

To get the sieve file k=3343    www.15k.org/Riesel/3343_ktest.txt

Any k with an entry in n's/1000 left but no sieve was sieved to 1G by Grobie.

Reserved Available Riesel Number

Some range might already be done to 1M. Please send any info to Mike Curtis

k Reserved n's/1000 left sieve 1M
(p, n's left)		 sieve 2M
(p, n's left)		 n's prime
253 Kosmaj 3.923 done 1T, 3629 71, 1007, 27623 (1.149M Joss) [Kosmaj at 1.6M]
659   7.798 31G, 1555   800516 (800k rieselsieve)
2293 rieselsieve   done    
3343  SB2 4.297 113G, 2531   483, 1299 (410k Joss) [SB2 at 740k]
3817  SB2 4.932 43G, 3007   40381, 161197, 218917 (256k Joss) [SB2 at 739k]
4813  SB2 5.018 49G, 3850   515, 11379, 13155 (230k Joss) [SB2 at 541k]
5077  SB2 6.038 48G, 5748   117, 333 (227k Joss) [SB2 at 441k]
6119  SB2 4.599 95G, 2721   4544 (360k Joss) [SB2 at 599k]
6883 Joss 2.46 done 10M, 3711 39 [Joss at 1M]
7331   5.217 65G, 4054   34, 87154 (224k Joss)
9179   3.617 7.5G, 2550   4120, 10408, 41680 (295k Joss)
9613   6.463 17G, 4629   1479, 34239 (211k Joss)
9787  kar_bon 3.787 170G, 1428   13, 589, 913, 2893, 47209 (506k Joss) [kar_bon at 550k]
9913   3.695 18G, 2252   1187, 8387 (291k Joss)
10949   2.648 114G, 1374 10M, 4202 1492, 1516 (481k Joss)
11411   4.52 342G, 1906   34, 106, 154, 1570, 12706 (575k Ingmar)
11519   5.22 12G, 4094   164444 (216k Joss)
12791   2.237 138G, 1289 10M, 5610 2818, 29398, 308026 (627k Joss)
14459 Ingmar 7.22 64G, 4947   171144 [Ingmar at 360k]
17077 Joss 2.478 16.5G, 1837 10M, 3639 677 [Joss at 370k]
19919   6.471 2G, 5185   888, 2688, 8460, 170820 (179k Joss)
20141 kar_bon 5.847 done   30, 78 (203k Joss) [kar_bon at 1M]
20639 Ingmar   1.2G, 6232   948, 2668, 23084, 80788, 81300 [Ingmar at 335k]
21547     1.6G, 7287   121, 2233, 16001 (104k Joss)
21673     1.4G, 4048   7, 775, 129175 (168k Joss)
22183     100M, 6201   727, 2471 (30k Joss)
23437 Keller 3.034 7G, 3034 10M, 4225 337, 2317, 3829 (30k Joss) [Keller at ?]
23669 rieselsieve   done    
24067     1M, 10004   1753, 2069, 2881 (30k Joss)
24671     1M, 9458   1290, 2250, 11698 (30k Joss)
25229   3.06 26G, 2070 10M, 4415 238652 (Yves Gallot) (325k Joss)

26773

 rieselsieve   done    
27253 kar_bon   done   (33k Joss) 370867 (L150)  [kar_bon at 1M]
27791 Templus 3.234 1M, 5717   4654, 12262, 17038, 19750 (30k Joss) [Templus at 300k]
30727     1M, 9416   1121, 3353, 15929 (30k Joss)
31511 kar_bon   done   278, 6398 (30k Joss) [kar_bon at 1M]
31859 rieselsieve   done    
32713 Marcin   1M, 9562   19, 4471, 10351 (30k Joss) 159151 [Marcin at 195k]
38473 rieselsieve   done    
38887 Marcin        
43541     3.3G, 3308   (237k Joss)
46663 rieselsieve   done    
48703 amphoria       109415 [amphoria at 840k]
48973     2G, 2569   43, 115, 259, 32119 (100k Max)
49151 amphoria       97058 [amphoria at 600k]
50171 amphoria   done   138 [amphoria at 1.5M]
50227  kar_bon   131M, 5851   11893 (31k Joss) [kar_bon at 521k]
51127 Max   25G   49, 73, 849, 4953, 6841, 35209 [Max at 404k]
53741 Joss   done 1.95T,1247 4738 [Joss at 1.1M]
57943 kar_bon   1M, 5132   555, 15675, 52287, 62475, 76335 (30k Joss) [kar_bon at 531k]
63487 Marcin       245, 293, 117413, 136517 [Marcin at 304k]
64387 Marcin       40249, 243001 [Marcin at 288k]
65279    4.95     1640, 4952, 66632 (82k Joss)
67117 rieselsieve   done    
70079   2.437 42G, 2006   1428 (176k Joss)
71009     done   1185112 (1.18M rieselsieve)
74201 Marcin       46, 142, 2014 [Marcin at 335k]
74699 riseslsieve   done    
77711 Marcin       1218, 108930 [Marcin at 201k]
81041 rieselsieve   done    
84277 Marcin        
85807 Marcin        
93997   6.600 91G, 895   864401 (864k rieselsieve)
97139 rieselsieve   done    
106303     10G, 3323   1939 (127k Joss)
114613     15G, 3824   211, 1687 (40k Joss)
116531 Marcin   1M, 4503   59782 [Marcin at 304k]
117037     8G, 3314   1029 (30k Joss)
124679     12G, 2182   948, 2460, 10308 (84k Joss)
130139     58G, 1316 10M, 3361 280296 (g127) (411k Joss)
131069 Andrew   1.3G, 2839   16, 112 (50k Joss) (500k Andrew)
131707 VBCurtis   done   [Curtis at 1.8M]
132217    4.09     15281 (30k Joss)
132851     1M, 4782   1734, 12222, 25110 (30k Joss)
138847 Joss 0.767 done 3.3T, 379 33, 1283793 (1.4M Jean Penné) [Joss at 1.63M]
143047 rieselsieve   done done  
144337 lsoule 4.23 done   [lsoule at 1M]
148901    4.52     (30k Joss)
150847     done   1076441 (rieselsieve)
152713     done   1154707 (rieselsieve)
161669 rieselsieve        
167021 VBCurtis   done   [VBCurtis at 1.95M]
170591   4.905 2.7G, 653   866870 (866k rieselsieve)
171089     done   (1M VBCurtis)
171607   1.648 58G, 915   21117, 73245 (410k Joss)
175211     done   (1M VBCurtis)
177941     done   34, 154 (200k James,1M gribozavr)
179743     50M, 3473   (30k Joss)
192089     done   1395688 (1.39M rieselsieve)
192509     1M, 4296   52 (30k Joss)
192971 rieselsieve   done done  
212893    3.70     730387 (rieselsieve)
216367     1M, 4067   1601, 5129, 28841 (35k Joss)
220033   10.140 200M, 2842   719731 (719k rieselsieve)
236377     1M, 7031    
239857  SB2   1M, 8134    [SB2 at 427k]
245561 rieselsieve   done   (309k Joss, VBCurtis 1M)
246299   10.707 200M, 2649   752600 (752k rieselsieve)
248047  SB2   1M, 4423    [SB2 at 617k]
249127     1M, 7067    
256453   2.35 done   607, 41359, 233779 (1M Grobie)
261221   6.829 200M, 2121   689422 (689k rieselsieve)
265423    4.08      
273613    3.55      
275591   1.767 18G, 1350   5354 (232k Joss)
278077     1M, 4311    

278713

    1M, 3399   17159 (32k Joss) 57719 (200k James)
279703   9.766 100M, 3748   616235 (616k rieselsieve)
279731    3.58      
284579    2.94      
294907    3.52      
304207 rieselsieve        
306251 SB2       [James at 534k]
309817   6.819 200M, 612   901173 (901k rieselsieve)
310867    4.32     381 (500k Cedric)
313979    3.08      
320107  SB2  3.62      [SB2 at 592k]
323563     10M, 5173    
327163     10M, 3206   167, 3047, 22151 (124k Joss)
332159    2.96      
334147 SB2  3.73      [SB2 at 588k]
334331  SB2  2.55      [SB2 at 748k]
336839 rieselsieve        
342337   1.394 21G, 923   1657 (337k Joss)
342847 rieselsieve        
350107     done   1144101 (1.14M rieselsieve)
362737    3.899      
370421     10M, 4240    
384029    3.46      
397027 rieselsieve   done done  
399239     done   32 (1M VBCurtis)
403993   1.230 done 29G, 1238 379 (405k Joss, 1M VBCurtis)
411793 Templus       35, 683, 9419, 233819 [Templus at 260k]
412717     done   1084409 (1.08M rieselsieve)
412843    4.45      
434729    4.00      
441907     10M, 5549    
444637 Thomas   done done none [Thomas at 2.3M]
451049     10M, 6423    
458743    7.73     547791 (547k rieselsieve)
460139   8.822 100M, 1944   779536 (779k rieselsieve)
464353    3.98      
464909     10M, 7035    
465187     10M, 6444    
469933    3.65      
469949 rieselsieve   done done (30k Joss)
473279    2.81      
485557 rieselsieve   done done (30k Joss)
487811     10M, 3350   (30k Joss)
491891     2.5G, 1377   5830 (251k Joss) ok
492787     10M, 7115    
500621     done   1138519 (rieselsieve)
502541     done   1199930 (1.19M rieselsieve)
504613     done   1136459 (rieselsieve)
509203          
516569   1.376 60G, 752   20 (448k Joss)
612509    2.26     (30k Joss)
643843    2.47      
648433    3.000      
671413     10M, 2965   (30k Joss)
685183    2.93      
686711    3.57      
700057    2.81      
700477    2.59      
762701          
777149          
780427    2.34      
783073    2.31      
784109   1.42 39G, 990   99884 (298k Joss)
790841          
808477     10M, 4511    [SB2 at 407k]
842711    4.19      
844559     10M, 5019    
850931 Joss 1.48

20G, 973

   8966 [Joss at 344k]
866219     10M, 5272    
893887 Joss 1.488 154G, 583   257 [Joss at 608k]
953429    2.54      
961573    2.499      
963643   1.084 161G, 737   none (335k Joss)
967597    1.84      
981493   1.420 500M, 1420   (30k Joss)
992077          
1002401     10M, 4745    
1005449     10M, 4761    
1005671     100M, 3851    
1006469     10M, 3148    
1011371     100M, 5324    
1034503    2.09      
1049917     done   (1M Joss)

1106681

          
1145699    1.81      
1180391    1.59      
1208953   1.161

219G, 912

   4007 (200k Joss)
1210421    2.04      
1230877     10M, 5763    
1234949     10M, 3905    
1247173          
1254341          
1283759    2.56      
1310437    2.39      
1330207          
1330319          
1343021    2.739      
1423139     9.5G, 1377   16980
1494299    1.99      
1523369    2.05      
1537649    2.69      
1570927   2.087 20M, 2087    
1580233   1.838 100M, 1838    
1878839     20M, 1573    
1926521     39G, 1006   (143k Joss)
2232007     done   1490605 (L4)
2308121 Thomas 0.631 75G, 287   (616k Joss)
2463547    2.04      
2559419    2.86      
2564279     100M, 1213    
2686919    1.89      
2693051    2.45      
3189299 Joss   500G, 213   [Joss at 875k]
4254149     20M, 1583    
4278899 Thomas 0.675 48G, 324 10M, 1036 13720 (520k Joss)
5112431    1.39      
5619371    1.63      
8288233   1.589     148699 (492k BotXXX)
8376239     20M, 1972    
9096613     50M, 1757    
9705763 Andrew   done   49335 [Andrew at 1M]
9770317   0.660 done done 2205 (322k Joss) (2M VBCurtis)
10013593    1.33      
10108837    1.69      
10247561    1.17      [SB2 at 574k]
10284899    0.889      
10296007    1.71      
10346561    1.49      [SB2 at 707k]
10453199    0.674     (Templus 440k)
10463923    0.951      
10544249    1.70      
10598947    1.34      
10639619    1.17      
10671431    1.04      
10805593    1.52      
10813783 Templus  0.823     none [Templus at 780k]
10906603    1.19      
10932097     1M, 2015    
10943321     1M, 2666    
11223059   0.843 260M, 843    
11311003   0.784 81G, 576   (275k Joss)
11319193     1M, 2025    
11468609     1M, 2025    
11553221     10M, 1982    
11639819 Templus 1.100 100M,1367   12 [Templus at 400k]
11658187     1M, 2297    
11716993     1M, 2168    
11741347     1M, 1945    
11846279     1M, 2230    
11847299     1M, 2209    
11932211     100M,1326    
11955659 Keller   1M, 1878    none
12192793    2.29      
12254533     100M, 1352    
12305981     100M, 1410    
12334093     100M, 1758    
12551291     1M, 2073    
12695159 Marcin 0.691      
12700769     10M, 2071    
12753311     1M, 1908    
12825793     1M, 2426    
13277471     1M, 2518    
13651423     1M, 2157    
13768087     1M, 2231    
13900807 VBCurtis 0.556 done done 9741 [VBCurtis at 2.4M]
14085941     100M, 1335    
14321533   0.457 done 100G, 439 (1019k Joss)
14466883     1M, 1874    
14533213     1M, 2135    
14549347     1M, 2365    
14745343     154M, 1198    
14961487 Thomas   105G, 436 10M, 1113 (403k Joss)
15296681     209M, 1250    
15364003   0.650 148G, 118   (818k Joss)
17481461    2.637      
19009421 Marcin        
19009979 Marcin       none [Marcin at 332k]
19370947 Thomas   done done 25 [Thomas at 2.27M]
19709699     460M, 897 10M, 1112  
24186941     10M, 1796    
24384313     done done (2M VBCurtis)
24814241     10M, 1864    
26161207 Thomas 0.594 73G, 243 45G, 582 (591k Joss)
26503927     10M, 1153 10M, 1157  
26946089     10M, 1939    
27659053     10M, 1746    
28077667    1.92     79305, 92145 (287k Marcin)
28161431     10M, 1800    
28420897     10M, 1648    
29899769     10M, 1959    
32537227 Kosmaj     1T, 1280 [Kosmaj at 1.25M]
32703941    1.75      
33118619     10M, 1660    
33615761     10M, 1418    
35873623    2.52      
36231101      done    (1M SB2)
37027019     10M, 1617    
37616317     10M, 1551    
37944761     10M, 1756    
38279707     10M, 1674    
38759233     10M, 1400    
39123883     10M, 1773    
40293059 Thomas 0.681 9.4G, 527 10M, 876 (226k Joss)
41343149     100M, 982 10M, 1128 (Grobie 475k)
42160421    2.269      
56251213 Andrew 0.698 done 10M, 1043 551 [Andrew at 1.74M]
58352849     10M, 1900    
59910449 Thomas   done done 92 [Thomas at 2.27M]
80857169 Thomas   done done 4, 1251076 [Thomas at 2.27M]
143316643 Thomas   done done [Thomas at 2.27M]
162405629 Thomas   done done 896, 12236 [Thomas at 2.27M]
175437131 Thomas   done done [Thomas at 2.27M]
189030223 Thomas   done done [Thomas at 2.27M]
203012861 Thomas   done done 754 [Thomas at 2.27M]
209826493 Thomas   done done 1071303, 1140855 [Thomas at 2.27M]
224371169 Thomas   done done 3548 [Thomas at 2.27M]
243163663 Thomas   done done 919087 [Thomas at 2.27M]
245265883 Thomas   done done [Thomas at 2.27M]
260213857 Thomas   done done [Thomas at 2.27M]
265831619 Thomas   done done [Thomas at 2.27M]
276278983 Thomas   done done 21623, 473423 [Thomas at 2.27M]
290851087 Thomas   done done 57 [Thomas at 2.27M]
298095191 Thomas   done done [Thomas at 2.27M]
300871183 Thomas   done done [Thomas at 2.27M]
308120317 Thomas   done done [Thomas at 2.27M]
308141737 Thomas   done done 7517 [Thomas at 2.27M]
315940139 Thomas   done done 8388, 595620 [Thomas at 2.27M]
326840893 Thomas   done done 31 [Thomas at 2.27M]
331541563   0.773 48G, 374 10M, 1201 (516k Joss)
346308551   0.853 71G, 648 10M, 1285 (241k Joss)
346807897   1.033 15G, 688 10M, 1470 ( 292k Joss)
350399261   0.566 done 78G, 501 (1.1M Joss)
352668821 Joss 1.03 done 264G, 850 49910 [Joss at 1M]
352744289 kar_bon   done 10M, 1929 [kar_bon at 1M]
353437897 kar_bon   done 10M, 1660 9533 [kar_bon at 1M]
353442133 Marcin     10M, 1186 [Marcin at 336k]
353880067 kar_bon 0.594 done 200M, 823 (765k Joss) [kar_bon at 1M]
355268803   0.846 98G, 344 10M, 1256 (580k Joss)
355279961     40M, 1805    
355281299     11M, 2679    
380630849 Thomas   done done [Thomas at 2.27M]
389152177 RPS   done   [RPS at 1.65M]
410314627 RPS   done   [RPS at 1.65M]
414322661 RPS   done   2114 [RPS at 1.65M]
432043439 RPS   done   [RPS at 1.65M]
443200949 RPS   done   [RPS at 1.65M]
463395913 RPS   done   [RPS at 1.65M]
482987411 RPS   done   [RPS at 1.65M]
491362811 RPS   done   [RPS at 1.65M]
493412999 RPS   done   [RPS at 1.65M]
494660219 RPS   done   [RPS at 1.65M]
531115657 RPS   done   [RPS at 1.65M]
535224337 RPS   done   [RPS at 1.65M]
536864983 RPS   done   [RPS at 1.65M]
540196717 RPS   done   [RPS at 1.65M]
552455201 RPS   done   25862 [RPS at 1.65M]
564510097 RPS   done   11345 [RPS at 1.65M]
567143683 RPS   done   4027 [RPS at 1.65M]
578625847 RPS   done   [RPS at 1.65M]
589877983 RPS   done   [RPS at 1.65M]
609937687 RPS   done   1561 [RPS at 1.65M]
651488009 RPS   done   156,10956 [RPS at 1.65M]
660879671 RPS   done   702 [RPS at 1.65M]
673503191 RPS   done   [RPS at 1.65M]
691459721 RPS   done   [RPS at 1.65M]
713633533 RPS   done   [RPS at 1.65M]
725433403 RPS   done   [RPS at 1.65M]
738297163 RPS   done   [RPS at 1.65M]
759833699 RPS   done   [RPS at 1.65M]
792729463         4271, 24671 (330k Andrew)
801584081 RPS   done   182 [RPS at 1.65M]
811064503 RPS   done   [RPS at 1.65M]
814419757 RPS   done   [RPS at 1.65M]
835596479 RPS   done   [RPS at 1.65M]
851324377 RPS   done   [RPS at 1.65M]
855686399 RPS   done   162836 [RPS at 1.65M]
857656417 RPS   done   4953 [RPS at 1.65M]
864316301 Cruelty   done   30, 402 [Cruelty at 1M]
2147483647 Edorajh 2.820     [Edorajh at 500k]
29330981023         (600k Andrew)
59493015971 Thomas   done done [Thomas at 4M]
1665624349782373     done   (Citrix 1M)
10075614324682349     done   (Citrix 1M)
12782924755172441     done   (Citrix 1M)
15335906269828439     done   (Citrix 1M)
23009979551311559     done   (Citrix 1M)
30729699810869707     done   (Citrix 1M)
41360993926068041     done   (Citrix 1M)
49050506465852977     done   (Citrix 1M)
49791527843569597     done   (Citrix 1M)
50670759245200691     done   (Citrix 1M)
72292129717621199     done   (Citrix 1M)