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Revision as of 22:18, 8 May 2024
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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 > 1000000.
Started
- 2010-10-24
Ended
- ongoing
k-values
- 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
Sieve file
Sieve file for 3,000,000 < n < 4,000,000 available here (LLR-format, 290,225 candidates).
Multi Reservation
- Here: The current nmax = 3,100,000 as of 2020-11-12.
Data table
Number of candidates for n ≤ 3100000.
k-value | Nash | Candidates | n-range | prime(s) for n |
---|---|---|---|---|
35 | 1264 | 12517 | 2520000 - | |
37 x | 630 | 5303 | 2500000 - | |
47 | 922 | 33673 | 1000000 - | 1025950 |
51 | 1550 | 40591 | 1000000 - 2500000 | 1026910, 1027635, 1231665 |
53 | 1368 | 46485 | 1000000 - | 1632590 |
57 | 2672 | 94011 | 1000000 - | 1098272, 1110980, 1486214, 2103370, 2639528, 3093440 |
61 | 2170 | 79949 | 1000000 - | 1124049, 1416365, 1487125, 1734983, 2134577, 2381887, 2580689, 2936967 |
65 | 2034 | 71164 | 1000000 - | 1374574, 1421088, 1505640, 2450614, 2583720, 2876718, 3080952 |
69 | 3438 | 87057 | 1000000 - 2500000 | 1473217, 1566375, 2174213, 2410035, 2428251 |
87 | 2839 | 101880 | 1000000 - | 1089098, 1120006, 1332741, 1358189, 1616138, 1852590, 2518122 |
103 | 1373 | 12918 | 2550223 - | |
111 | 2954 | 24336 | 2601487 - | 3060238 |
x - Only n != 1 mod 10 is searched.
Range history
The data file can be found here.
Range | # candidates | Contributor | Reserved | Done
|
---|---|---|---|---|
1000-1003 | 963 | Predrag Minovic | [ERROR 2010-10-24] 2 | [ERROR 2010-11-07] 22 |