RPS Megabit Drive 3

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Purpose

The goal of this drive is to search for primes of the form k•2ⁿ-1 for k ≤ 300 and n > 1400000.

Started

• 2014-05-30

Ended

• 2022-03-09

k-values

2014-05-30: k = 203, 205, 219, 227, 235, 257, 259

2014-06-03: adding k = 275, 295

All for drive: k = 203, 205, 219, 227, 235, 257, 259, 275, 295

Data table

All k's searched for 1400000 ≤ n ≤ 2222000.

k-value	Nash	Candidates	# primes	prime(s) for n
203	1687	23371	0
205	1351	19486	2	1537779, 1666435
219	1069	14363	1	2178673
227	2550	34112	0
235	1563	21706	3	1718787, 1824515, 2163273
257	1867	26086	2	1658254, 2108554
259	1561	21162	1	1695723
275	1581	22195	1	1846390
295	1266	16545	1	1832129

External Links

• Thread at MersenneForum

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