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Difference between revisions of "Free-DC Drive 2"
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==Purpose== | ==Purpose== | ||
| − | Searching for [[Riesel prime]]s for 6000 | + | Searching for top-5000 [[Riesel prime]]s for {{Rk|6000|7000}} from {{Rn|410000|410000}} excluding {{Vk}}'s reserved by others. Total 378 {{Vk}}'s. |
| − | *Started: [https://www.free-dc.org/showthread.php?19023 | + | |
| + | *Started: [https://www.free-dc.org/showthread.php?19023 2009-05-28]. | ||
==Status== | ==Status== | ||
| − | Suspended at ? | + | *Suspended: About 2010-06-06 at approximately {{Rn|560000|560000}}. |
| + | |||
| + | ==Notes== | ||
| + | The reservation and detail about exclusions can be found in the [https://www.mersenneforum.org/node/224889 reservation post]. Excluded {{Vk}}'s are on the right side of the slash "/" shown in the 1st batch. 122 {{Vk}}'s were excluded from the drive including all {{Rk|6200|6300}}, 8 of which are unknown at this time. The following are 114 known {{Vk}}'s that were ''excluded'' from the drive: | ||
| + | *6003, 6005, 6025, 6027, 6031, 6035, 6039, 6043, 6047, 6051, 6057, 6061, 6065, 6069, 6071, 6081, 6089, 6095, 6105, 6107, 6117, 6119, 6121, 6129, 6131, 6137, 6145, 6151, 6153, 6157-6165, 6171, 6177, 6179, 6189, 6191, 6195-6299, 6315, 6329, 6343, 6345, 6369, 6397, 6435, 6449, 6465, 6519, 6555, 6585, 6609, 6615, 6703, 6705, 6743, 6765, 6825, 6883, 6927, 6975 | ||
| + | |||
| + | The drive formally omitted {{Rn|485000|490000}} per the final statement of [https://www.free-dc.org/showthread.php?19811#post138591 this post]. The project was known to skip forward {{Vn}}-ranges to keep primes in the top-5000 but this usually was not stated. Likely due to this, an unusually small number of primes were reported for {{Rn|530000|550000}} that likely extends to {{Rn|520000|560000}}. | ||
| + | |||
| + | The effective search ranges for the drive were about {{Rn|410000|485000}} & {{Rn|490000|560000}}. | ||
| + | |||
| + | Primes were reported in [[Free-DC's Prime Search]] thread [https://www.free-dc.org/showthread.php?19811 here]. | ||
| + | |||
| + | The suspended date is the date of the final [[Free-DC's Prime Search|Free-DC]] prime where {{Rk|6000|7000}} and '''{{Vn}} ≤ 560000''' reported in the [https://www.free-dc.org/showthread.php?19811#post146112 final 2nd drive post] and at [https://t5k.org/primes/page.php?id=93051 top-5000 primes]. | ||
| + | |||
| + | The post [https://www.free-dc.org/showthread.php?26443#post149249 here] refers to the [[Free-DC Drive High-weight|High-weight drive]] that was run on the same port as Drive 2. The drive was restricted to high-weight {{Vk}}'s only. | ||
==Primes found== | ==Primes found== | ||
Latest revision as of 23:01, 9 June 2025
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Contents
[hide]Purpose
Searching for top-5000 Riesel primes for k = 6000 - 7000 from n = 410000 excluding k's reserved by others. Total 378 k's.
- Started: 2009-05-28.
Status
- Suspended: About 2010-06-06 at approximately n = 560000.
Notes
The reservation and detail about exclusions can be found in the reservation post. Excluded k's are on the right side of the slash "/" shown in the 1st batch. 122 k's were excluded from the drive including all k = 6200 - 6300, 8 of which are unknown at this time. The following are 114 known k's that were excluded from the drive:
- 6003, 6005, 6025, 6027, 6031, 6035, 6039, 6043, 6047, 6051, 6057, 6061, 6065, 6069, 6071, 6081, 6089, 6095, 6105, 6107, 6117, 6119, 6121, 6129, 6131, 6137, 6145, 6151, 6153, 6157-6165, 6171, 6177, 6179, 6189, 6191, 6195-6299, 6315, 6329, 6343, 6345, 6369, 6397, 6435, 6449, 6465, 6519, 6555, 6585, 6609, 6615, 6703, 6705, 6743, 6765, 6825, 6883, 6927, 6975
The drive formally omitted n = 485000 - 490000 per the final statement of this post. The project was known to skip forward n-ranges to keep primes in the top-5000 but this usually was not stated. Likely due to this, an unusually small number of primes were reported for n = 530000 - 550000 that likely extends to n = 520000 - 560000.
The effective search ranges for the drive were about n = 410000 - 485000 & n = 490000 - 560000.
Primes were reported in Free-DC's Prime Search thread here.
The suspended date is the date of the final Free-DC prime where k = 6000 - 7000 and n ≤ 560000 reported in the final 2nd drive post and at top-5000 primes.
The post here refers to the High-weight drive that was run on the same port as Drive 2. The drive was restricted to high-weight k's only.
