20210406, 19:24  #408  
May 2007
Kansas; USA
3^{2}·13·89 Posts 
Quote:
OK I'll start testing within a couple of days for n=300k500k. Thanks. 

20210409, 04:51  #409 
May 2007
Kansas; USA
3^{2}×13×89 Posts 
k=14549535 is complete for n=300K500K, 5 primes were found shown below, the k is released. Happy is still working on a doublecheck for n=125K300K.
Primes: 14549535*2^3766071 14549535*2^3903931 14549535*2^4301981 14549535*2^4461711 14549535*2^4532171 
20210410, 05:53  #410 
"Alexander"
Nov 2008
The Alamo City
3×5×47 Posts 
The aforementioned doublecheck of k=14549535 for n=125k300k is complete. In addition to the known primes, the following new primes were found:

20210510, 20:48  #411 
May 2007
Kansas; USA
3^{2}·13·89 Posts 
k=8847:
Doublecheck complete to n=500K. No problems found. Hole filled for n=500K700K. In addition to confirming the 3 previously found primes, one additional prime was found: 8847*2^5142981 Results attached. 
20210510, 20:57  #412 
May 2007
Kansas; USA
3^{2}·13·89 Posts 
k=32767:
This one is currently reserved by Diep for n=5M30M. Since it is so low weight I thought it would be interesting to see if there were any more primes up to n=1M. Doublecheck complete to n=50K. 4 previously found primes confirmed. No problems found. Firsttime check complete for n=50K1M. No primes found. This is a very lowweight k! :) Results attached. 
20210513, 02:33  #413 
"Alexander"
Nov 2008
The Alamo City
1011000001_{2} Posts 
As of May 9, the (near)Woodall k's listed in https://www.mersenneforum.org/showpo...&postcount=363 have been completed to n=475k. The following primes were found:
Last fiddled with by Happy5214 on 20210513 at 02:34 Reason: Correct n 
20210519, 19:15  #414 
May 2007
Kansas; USA
24255_{8} Posts 
k=10005 has a large prime gap so I doublechecked it for n=01.25M.
34 primes confirmed; no problems found. Results attached. Last fiddled with by gd_barnes on 20210519 at 19:15 
20210602, 04:42  #415 
"Alexander"
Nov 2008
The Alamo City
3·5·47 Posts 
I've completed the remaining RPS 9th and 10th Drive k's with missing ranges from n=350k to 375k. 21 primes were found, which are attached. Of the laptops mentioned in my last post on this set of k's, the Kubuntu Focus has been dedicated to GIMPS and is not working on this project, but the older laptop is actively working on this. The expected finish date is currently October, though I may dedicate some additional cycles to it once it gets closer to the finish line.

20210623, 07:04  #416 
May 2007
Kansas; USA
24255_{8} Posts 
Back about 1314 years ago Beyond (SB2) did a lot of searching on many lowweight k's. Although he gave details about what he was working on his details were frequently incomplete and he did not complete a lot of what he was sieving. One of the main issues is that we never knew where he started his searches. Sometimes they started at n=1, other times at n=300K, many times we never knew. I found these 4 main status posts of his:
post link / date https://www.mersenneforum.org/showpost.php?p=100670 20070313 https://www.mersenneforum.org/showpost.php?p=101240 20070318 https://www.mersenneforum.org/showpost.php?p=110378 20070714 https://www.mersenneforum.org/showpost.php?p=153292 20081214 I took all of the k's found in those posts and removed some k's that were already checked by others since then. This left 98 k's all of which are shown below. All 98 k's have been doublechecked by me for n=1 to 1M. 5 missing primes were found for ranges that he said were done and 13 new primes were found for ranges that he sieved but never searched or failed to report. Missing primes: 9613*2^7349071 124679*2^121 239857*2^1619011 334147*2^1036691 36231101*2^344821 New primes: 273613*2^3974071 313979*2^2431841 412843*2^1079431 412843*2^1429831 412843*2^3772231 434729*2^9414081 451049*2^2819841 464909*2^1366201 469933*2^3306671 473279*2^1038401 700477*2^4920611 783073*2^4026351 1034503*2^1742831 All k's searched with all primes listed below. Red = missing Bold = new Code:
k / nprimes 2039: 24, 64, 319920, 841312 2171: 14, 202, 1594, 6754, 101974 2279: 900, 6572, 23772, 35252 2591: 134, 326, 830, 2174, 17270 2741: 50, 138, 1610, 1850, 3954, 10202, 23178, 84858, 468594, 737586 2759: 388, 405820, 569812 2797: 21, 6093, 7389, 9861 2983: 11, 671, 767, 2891, 771455 3343: 483, 1299 3389: 92, 848, 2684, 23864, 209996, 504584, 749828 3539: 12, 192, 4236, 869868 3817: 40381, 161197, 218917 3821: 70, 15814, 439006 3823: 7, 287, 335, 599, 1015, 2407, 384223 4327: 13, 37, 133, 1189 4597: 17, 37, 161, 221, 721, 112009, 799781 4813: 515, 11379, 13155 5077: 117, 333, 490629, 881829 5099: 184, 1216, 9936, 19072, 27648 5323: 27, 83, 8651, 107643 6119: 4544, 678080 7331: 34, 87154, 704842 9179: 4120, 10408, 41680 9613: 1479, 34239, 464439, 636159, 734907 9913: 1187, 8387 10949: 1492, 1516 11519: 164444 12791: 2818, 29398, 308026 17077: 677 19919: 888, 2688, 8460, 170820 21547: 1, 121, 2233, 16001, 310625, 936473 21673: 7, 775, 129175 22183: 727, 2471, 773447 24067: 1753, 2069, 2881, 700073 24671: 1290, 2250, 11698, 108906, 382066 25229: 238652 30727: 1121, 3353, 15929 43541: 507098, 850394 48973: 43, 115, 259, 32119 65279: 1640, 4952, 66632, 625704 70079: 1428 106303: 1939 114613: 211, 1687, 461551 117037: 1029 124679: 12, 948, 2460, 10308, 497244, 769908 132217: 15281 171607: 21117, 73245 179743: 99731 192509: 52 236377: 19693, 111973, 178285, 824773 239857: 33, 7233, 161901 248047: 11613 249127: 5189, 31301 273613: 39, 87, 159, 397407 278713: 17159, 57719 279731: 1782 284579: 56, 4736 294907: 545, 203921, 221409 306251: 22, 29038, 37462 313979: 4, 184, 243184 320107: 41, 257, 8249 323563: 243, 9099 332159: 4416 334147: 37, 7981, 103669 334331: 78, 294, 7998 362737: 153 370421: 201442 384029: 24 403993: 379 412843: 15, 16047, 107943, 142983, 377223 434729: 8, 20, 80, 941408 441907: 837, 42861 451049: 7748, 22784, 281984 464353: 191, 527, 1919, 371279 464909: 73740, 136620 465187: 3949, 16441 469933: 51, 330667 473279: 160, 92032, 103840 492787: 553, 1865, 6961, 58849 516569: 20 648433: 75 700477: 973, 492061 780427: 783073: 11, 402635 808477: 11673 842711: 226, 3034, 3754 844559: 893887: 257 1005449: 204, 41100 1034503: 43, 5971, 174283 1210421: 28674, 655938 10013593: 3847 10108837: 33657 10247561: 730 10284899: 868, 2596 10346561: 32714 36231101: 34482, 469002 37616317: Attached are primes and residues from the effort. Gary 
20210628, 02:03  #417 
"Alexander"
Nov 2008
The Alamo City
1011000001_{2} Posts 
The (near)Woodall k's listed in https://www.mersenneforum.org/showpo...&postcount=363 have been completed to n=500k. The following primes were found:
I want to reiterate my reservation of k=454483, which will resume work from this point. 
20210720, 22:22  #418 
"Alexander"
Nov 2008
The Alamo City
2C1_{16} Posts 
I have completed the remaining RPS 9th and 10th Drive k's with missing ranges from n=375k to 400k, completing the missing ranges. 24 primes were found, which are attached. I got a huge boost from my originally projected October completion date when my new laptop took over from my old one (which had an HDD failure). I am releasing all k's associated with the RPS 9th and 10th Drives.

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