View source for PrimeGrid Generalized Cullen Prime Search

==Purpose==
The goal of this project is to find [[Cullen prime|Generalized Cullen primes]] of the form {{Kbn|+|n|b|n}} for bases {{Vb}} which have no known primes.

==Status==
*[http://www.primegrid.com/stats_gcw_llr.php Current status]
*[[:Multi Reservation:17|Multi Reservation 17]]: The current test size is {{Num|{{#expr: floor( {{Multi Reservation:17-NMax}} * ln( {{Multi Reservation:17-KMax}} ) / ln(10) ) }}}} digits as of {{Multi Reservation:17-Date}}.
*'''Important note:''' Tests are handed out by size instead of {{Vn}}-value. The above multi-reservation is set to the current {{Vn}}-value of the largest base of the project. A calculation must be made for each base so that its corresponding {{Vn}}-value is shown correctly.

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|category=PrimeGrid Generalized Cullen Prime Search
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|secseparators=[[Cullen prime ,|Base ,,]]
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|resultsheader=<b>The bases currently being searched by the project</b>:
}}

==Found primes==
Each of these finds was the first known Generalized Cullen prime in that base, eliminating that base from the search.
* 2021-08-28: [[Cullen prime 73|{{Kbn|+|2525532|73|2525532}}]]
* 2019-09-02: [[Cullen prime 25|{{Kbn|+|2805222|25|2805222}}]]
* 2018-03-11: [[Cullen prime 41|{{Kbn|+|1806676|41|1806676}}]]
* 2018-01-18: [[Cullen prime 116|{{Kbn|+|1323365|116|1323365}}]]
* 2017-08-21: [[Cullen prime 53|{{Kbn|+|1341174|53|1341174}}]]
* 2016-10-08: [[Cullen prime 79|{{Kbn|+|682156|79|682156}}]]
* 2012-01-29: [[Cullen prime 113|{{Kbn|+|427194|113|427194}}]]
* 2010-05-25: [[Cullen prime 68|{{Kbn|+|129897|68|129897}}]]

==See also==
*[[PrimeGrid]]
*[[Cullen prime]]

==External links==
*[https://www.primegrid.com/forum_thread.php?id=7073 Generalized Cullen/Woodall Prime Search introduction - PrimeGrid Forums]

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