RPS Drive 4

Overview

RPS Drive 4 - This drive is done.

Project	Riesel Prime Search
Drive name	RPS Drive 4
Purpose	Search for Riesel primes for 21 k < 300.
Date start	2006-07-28
Date end	2006-12-16
k-values	91 - 299
n-range	250000 - 600000
# candidates	222033
Primes found	35 new
Link	MersenneForum

k-history

• k-values: 91, 109, 203, 205, 211, 215, 217, 241, 245, 257, 259, 263, 265, 271, 275, 281, 283, 287, 293, 295, 299. See n-values by k in Data table below.

n-history

• n-values: n = 250000 - 600000

Primes table

The data file can be found here.

k-value	Nash	Candidates	n-range	# primes	prime(s) for n
91	2374	16165	300000-600000	3	313849, 535819, 563469
109	594	3579	350000-600000	0
203	1687	13096	260000-600000	3	313474, 455190, 480918
205	1351	11301	250000-600000	2	420297, 462261
211	1039	7716	260000-600000	1	262877
215	2245	17503	250000-600000	1	331784
217	806	6009	260000-600000	3	327829, 377581, 398605
241	1600	12218	260000-600000	3	336197, 407709, 497679
245	1419	11346	260000-600000	0
257	1867	12057	320000-600000	1	541402
259	1561	11929	260000-600000	6	278567, 316403, 347159, 423467, 425257, 427623
263	1215	9099	260000-600000	0
265	2008	15066	260000-600000	1	323083
271	1510	11595	260000-600000	4	274509, 322971, 342349, 470529
275	1581	12204	260000-600000	1	398928
281	937	7317	260000-600000	0
283	597	4386	260000-600000	0
287	1307	10005	260000-600000	1	525378
293	1483	10920	260000-600000	2	421330, 517242
295	1266	9006	260000-600000	2	374035, 389903
299	1199	9516	260000-600000	1	295640

Notes

Riesel Prime Search

Miscellaneous

Main

Current work

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 Drive 9ks Megabit Drive‎ 1 Megabit Drive‎ 2 Megabit Drive‎ 3

Individual k-searches

k=5 k=15 k=17 k=105 k=125

Others