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Difference between revisions of "RPS Megabit Drive 1"
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Revision as of 16:15, 24 February 2025
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Overview
RPS Megabit Drive 1 - Ongoing
| Project | Riesel Prime Search |
| Drive name | RPS Megabit Drive 1 |
| Purpose | Search for Riesel primes for k < 300 and n > 1000000 |
| Current status | Multi Reservation 4: The current nmax = 3,300,000 as of 2025-05-20 |
| Date start | 2010-10-24 |
| k-values | 35 - 111 |
| n-range | 1000000 - |
| Sieve | File:RPS Megabit Drive 1 sieve.zip |
| Primes found | 39 new |
| Link | Thread at MersenneForum |
k-history
- 2010-10-24: k = 51, 57, 61, 65, 69, 87 for n > 1,000,000
- 2011-01-26: adding k = 47, 53 for n > 1,000,000
- 2014-08-12: removing k = 51, 69 for n > 2,500,000
- 2014-08-12: adding k = 35 for n > 2,520,000, k = 37 for n > 2,500,000 only n != 1 mod 10, k = 103 for n ≥ 2,550,223, and k = 111 for n ≥ 2,601,487
- currently k = 35, 37, 47, 53, 57, 61, 65, 87, 103, 111
n-history
Sieve history
Reservation history
The data file can be found here. Notes:
- To identify a post of the MersennForum thread the date and post number are given.
- If a post number is given with '1' there's no information from the thread, so the first post is used instead.
| Range (kByte) | #cand. | Contributor | Reserved | Done
|
|---|---|---|---|---|
| 1000-1003 | 963 | Predrag Minovic | 2010-10-24 (2) | 2010-11-07 (22) |
Primes table
The data file can be found here.
| k-value | Nash | Candidates | n-range(s) | # primes | prime(s) for n
|
|---|---|---|---|---|---|
| 35 | 1264 | 2520000-3100000 | 0 | ||
| 37 | 630 | 2500000-3100000** | 0 | ||
| 47 | 922 | 1000000-1653000, 1692000-3100000 | 1 | 1025950 | |
| 51 | 1550 | 1000000-1620000, 1687162-2500000 | 3 | 1026910, 1027635, 1231665 | |
| 53 | 1368 | 1000000-1653000, 1684000-3100000 | 1 | 1632590 | |
| 57 | 2672 | 1000000-1620000, 1679288-3100000 | 6 | 1098272, 1110980, 1486214, 2103370, 2639528, 3093440 | |
| 61 | 2170 | 1000000-1620000, 1674483-3100000 | 8 | 1124049, 1416365, 1487125, 1734983, 2134577, 2381887, 2580689, 2936967 | |
| 65 | 2034 | 1000000-1620000, 1669972-3100000 | 7 | 1374574, 1421088, 1505640, 2450614, 2583720, 2876718, 3080952 | |
| 69 | 3438 | 1000000-1620000, 1665716-2500000 | 5 | 1473217, 1566375, 2174213, 2410035, 2428251 | |
| 87 | 2839 | 1000000-1620000, 1652000-3100000 | 7 | 1089098, 1120006, 1332741, 1358189, 1616138, 1852590, 2518122 | |
| 103 | 1373 | 2550223-3100000 | 0 | ||
| 111 | 2954 | 2601487-3100000 | 1 | 3060238 |
**: Only n != 1 mod 10 is searched.
Notes
Sieve file for 3,000,000 < n < 4,000,000 available (LLR-format, 290,225 candidates).
Riesel Prime Search
