RPS Drive 7

• Name: Riesel Prime Search Drive 7
• Purpose: The goal of this drive is to search for primes of the form k•2ⁿ-1 for 21 high-weighted 2200 < k < 3000.
• Link: Mersenne Forum
• Started: 2009-02-06
• Ended: 2020-04-25
• k-values:

2009-02-06: k = 2235, 2265, 2295, 2325, 2355, 2415, 2445, 2505, 2547, 2565,

2655, 2685, 2715, 2745, 2775, 2835, 2865, 2895, 2925, 2955, 2985 for 350,000 ≤ n ≤ 600,000

2009-08-23: removing k = 2865 for n > 600,000

2009-08-23: extending remaining k for 600,000 < n ≤ 1,000,000

2011-09-13: extending all k for n > 1,000,000

currently k = 2235, 2265, 2295, 2325, 2355, 2415, 2445, 2505, 2547, 2565, 2655, 2685, 2715, 2745, 2775, 2835, 2895, 2925, 2955, 2985

• n-values: 360000 ≤ n ≤ 2000000

Sieve files

Sieve file for 2,000,000 < n < 2,100,000 available here (100,843 candidates).

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