RPS Drive 8

• Name: Riesel Prime Search Drive 8
• Purpose: The goal of this drive is to search for primes of the form k•2ⁿ-1 for 20 high-weighted 3000 < k < 10000.
• Link: Mersenne Forum
• Started: 2009-03-24
• Ended: 2024-04-10
• k-values:

2009-03-24: k = 3345, 3975, 4935, 5025, 5355, 5445, 5535, 5865, 6165, 6369,

6555, 6705, 6975, 7215, 7245, 8235, 8295, 9015, 9075, 9441 for 380000 ≤ n ≤ 700000

2009-03-28: removing k = 8235 for n > 405000

2010-07-11: extending remaining k for n > 700000

2011-09-13: extending all k for n > 1000000

All for drive k = 3345, 3975, 4935, 5025, 5355, 5445, 5535, 5865, 6165, 6369, 6555, 6705, 6975, 7215, 7245, 8235, 8295, 9015, 9075, 9441

• n-values: 380000 ≤ n ≤ 1333000

Data table

k-value	Nash	n-range	prime(s) for n (confirmed)
3345		380000-1333000	464725, 496616, 564815, 704675, 706907, 806591, 1163424
3975		380000-1333000	404016, 541557, 554537, 603436, 844421, 1103217
4935		380000-1333000	405099, 411106, 445949, 609292, 610888, 795867, 796180, 852607, 868194, 1049124, 1135868
5025		380000-1333000	456808, 471882, 701296, 759739, 908815, 1273989
5355		380000-1333000	419601, 517558, 561953, 637185, 721545, 963837, 1080645
5445		380000-1333000	411398, 426410, 435815, 522059, 525824, 530923, 584652, 609541, 644452, 666302, 796718, 1037660, 1080331, 1144729, 1189501, 1245349
5535		380000-1333000	434856, 472351, 644781, 707340, 1060390, 1070892, 1086103, 1213120, 1264858
5865		380000-1333000	381794, 417280, 427626, 511085, 613568, 678597, 818472, 837271, 889294, 889524, 1157728, 1189894, 1291784
6165		380000-1333000	404771, 423938, 426467, 432948, 752905, 775125, 802635, 820642, 838587, 930042, 988573, 1219740
6369		380000-1333000	428037, 843816, 1109384, 1117513
6555		380000-1333000	436774, 451634, 545008, 556347, 746598, 754942, 786768, 852689, 951938, 1008197, 1068902, 1080139, 1083091, 1125540, 1225770, 1254508, 1260074, 1270491
6705		380000-1333000	425927, 472680, 495407, 645467, 649240, 721692, 783226, 1283847
6975		380000-1333000	389032, 481543, 529869, 544636, 554584, 562591, 639632, 687468, 853931, 974757, 1063347, 1321778
7215		380000-1333000	462798, 521696, 527378, 608122, 637323, 649002, 731016, 911807, 1114007, 1285443
7245		380000-1333000	410486, 412475, 520742, 566594, 618242, 734036, 788010, 808105, 880345, 882745, 994567, 1109076, 1248284
8235		380000-405000	389465, 397032
8295		380000-1333000	383469, 387251, 491744, 508161, 532615, 646773, 785683, 926313
9015		380000-1333000	435418, 448216, 453672, 626654, 732435, 853964
9075		380000-1333000	404230, 435321, 584745, 648450, 881939, 1119272, 1132874, 1331605
9441		380000-1333000	388683, 441126, 501654, 528999, 610639, 662846, 893751, 991067, 1119272

Range history

Riesel Prime Search

Miscellaneous

Main

Current work

Megabit Drive‎ 1

Completed

Drive 1 Drive 2 Drive 3 Drive 4 Drive 5 Drive 6 Drive 7 Drive 8 Drive 9 Drive 10 Drive 11 Drive 12 Megabit Drive‎ 2 Megabit Drive‎ 3

Individual k-searches

k=5 k=15 k=17

Others