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Difference between revisions of "Woodall prime"

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A '''Woodall prime''' is a [[Woodall number]] ({{Kbn|n|2|n}}), which is [[prime]].
 
A '''Woodall prime''' is a [[Woodall number]] ({{Kbn|n|2|n}}), which is [[prime]].
  
A '''"Generalized Woodall prime"''' could be defined as a Woodall prime with a general base {{Vb}} > 2, so of the form {{Kbn|n|b|n}}.
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A '''Generalized Woodall prime''' could be defined as a Woodall prime with a general base {{Vb}} > 2, so of the form {{Kbn|n|b|n}}.
 
The restriction of {{Vn}}+2 > {{Vb}} should then be claimed, otherwise every prime could be called a "Generalized Woodall prime".
 
The restriction of {{Vn}}+2 > {{Vb}} should then be claimed, otherwise every prime could be called a "Generalized Woodall prime".
  
 +
A '''Near Generalized Woodall prime''' is defined as '''[[:Category:Woodall prime M|{{Kbn|(n-1)|b|n}}]]''' or '''[[:Category:Woodall prime P|{{Kbn|(n+1)|b|n}}]]'''.
 
==Note==
 
==Note==
 
For a complete list in this Wiki the primes of the forms {{Kbn|n|b|n}} are given with {{Vb}} ≥ 2, {{Vn}} ≥ 1 and listed as "Gen Woodall primes".
 
For a complete list in this Wiki the primes of the forms {{Kbn|n|b|n}} are given with {{Vb}} ≥ 2, {{Vn}} ≥ 1 and listed as "Gen Woodall primes".
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*[https://primes.utm.edu/glossary/page.php?sort=WoodallNumber Woodall number]
 
*[https://primes.utm.edu/glossary/page.php?sort=WoodallNumber Woodall number]
 
*[https://primes.utm.edu/top20/page.php?id=45 Top 20 Generalized Woodall primes]
 
*[https://primes.utm.edu/top20/page.php?id=45 Top 20 Generalized Woodall primes]
*[http://harvey563.tripod.com/GeneralizedWoodallPrimes.txt Exhaustive list] by S.Harvey
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*[https://harvey563.tripod.com/GeneralizedWoodallPrimes.txt Generalized Woodall primes] by S.Harvey
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*[https://harvey563.tripod.com/NearGeneralizedWoodall.txt Near Generalized Woodall primes] by S.Harvey
 
*[https://www.mersenneforum.org/showthread.php?t=19713 Thread] at [[MersenneForum]]
 
*[https://www.mersenneforum.org/showthread.php?t=19713 Thread] at [[MersenneForum]]
 
[[Category:Woodall prime| ]]
 
[[Category:Woodall prime| ]]

Revision as of 09:53, 13 March 2024

Definitions

A Woodall prime is a Woodall number (n•2n-1), which is prime.

A Generalized Woodall prime could be defined as a Woodall prime with a general base b > 2, so of the form nbn-1. The restriction of n+2 > b should then be claimed, otherwise every prime could be called a "Generalized Woodall prime".

A Near Generalized Woodall prime is defined as (n-1)bn-1 or (n+1)bn-1.

Note

For a complete list in this Wiki the primes of the forms nbn-1 are given with b ≥ 2, n ≥ 1 and listed as "Gen Woodall primes".

See also

External links