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Difference between revisions of "Cullen prime"
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==External links== | ==External links== | ||
*[[Wikipedia:Cullen_number|Cullen number]] | *[[Wikipedia:Cullen_number|Cullen number]] | ||
| − | *[https:// | + | *[https://t5k.org/top20/page.php?sort=Cullen Cullen number] |
| − | *[https:// | + | *[https://t5k.org/top20/page.php?id=42 Top 20 Generalized Cullen primes] |
*[http://www.loeh.name/guenter/gc/status.html List for 2 ≤ b ≤ 100] by [[Günter Löh]], 2019-11-23 | *[http://www.loeh.name/guenter/gc/status.html List for 2 ≤ b ≤ 100] by [[Günter Löh]], 2019-11-23 | ||
*[http://harvey563.tripod.com/GClist.txt List for 101 ≤ b ≤ 10000] by [[Steven Harvey]] | *[http://harvey563.tripod.com/GClist.txt List for 101 ≤ b ≤ 10000] by [[Steven Harvey]] | ||
Revision as of 06:42, 28 October 2024
Contents
Definitions
A Cullen prime is a Cullen number (n•2n+1), which is prime.
A "Generalized Cullen prime" could be defined as a Cullen prime with a general base b > 2, so of the form n•bn+1.
The restriction of n+2 > b should then be claimed, otherwise every prime could be called a "Generalized Cullen prime".
Note
For a complete list in this Wiki the primes of the forms n•bn+1 are given with b ≥ 2, n ≥ 1 and listed as "Cullen primes".
See also
- Cullen primes base 2 list
- Table with all available bases
External links
- Cullen number
- Cullen number
- Top 20 Generalized Cullen primes
- List for 2 ≤ b ≤ 100 by Günter Löh, 2019-11-23
- List for 101 ≤ b ≤ 10000 by Steven Harvey
- Discoverers for 3 ≤ b ≤ 200 by Wilfrid Keller, occasionally updated
- Current reservation/status: 2023-04-01 to (ongoing) at MersenneForum
- Generalized Cullens/Woodalls: 2023-03-13 to 2023-04-03 at MersenneForum
- Some new Generalized Cullen and Woodall primes: 2019-09-02 to 2019-11-27 at MersenneForum
- Generalized Cullen/Woodall Sieving Software: 2014-11-05 to 2014-12-29 at MersenneForum
- Generalized Cullen and Woodall Searches: 2014-09-21 to 2022-02-12 at MersenneForum
- Old pages by Daniel Hermle (WaybackMachine)
