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Difference between revisions of "Cullen prime 18"

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{{Cullen prime
 
{{Cullen prime
 
|CuBase=18
 
|CuBase=18
|CuMaxn=203597
+
|CuMaxn=1000000
|CuDate=2019-11-23
+
|CuDate=2023-05-20
 
|CuReserved=
 
|CuReserved=
 
|CuNlist=
 
|CuNlist=
1
+
1;T:T
 
3
 
3
 
21
 
21
Line 14: Line 14:
 
16839;8324
 
16839;8324
 
49963;416
 
49963;416
60239
+
60239;297
 
150940
 
150940
 
155928
 
155928
|CuRemarks=
+
219525
 +
342091
 +
353901
 +
612497;136064
 +
|CuRemarks=The {{OEIS|l|A007648}}<br>See additional history at [http://www.loeh.name/guenter/gc/ Generalized Cullen primes] & [http://prothsearch.com/GC-Discoverers.html Discoverers of Generalized Cullen primes].
 
}}
 
}}
 
==History==
 
==History==
 +
{{HistC|2023-05-20|1000000|Ryan Propper|855602}}
 +
{{HistF|2023-05-20|612497|Ryan Propper|855581}}
 +
{{HistF|2023-05-20|353901|Ryan Propper|855581}}
 +
{{HistF|2023-05-20|342091|Ryan Propper|855581}}
 +
{{HistF|2023-05-20|219525|Ryan Propper|855581}}
 +
{{HistR|2023-05-18|Ryan Propper|855517}} to {{Rn|1000000|1000000}}
 +
{{HistC|2023-04-25|2-100000|Mark Rodenkirch}}, double-check
 +
{{HistC|2014|4441-218779|Günter Löh}}
 +
{{HistF|?|155928|Günter Löh}}
 +
{{HistF|?|150940|Günter Löh}}
 +
{{HistF|2002-05-20|60239|Günter Löh}}
 +
{{HistF|2000-11-02|49963|Günter Löh}}
 +
{{HistF|2000-05-15|16839|Günter Löh}}
 +
{{HistC|2000|3054-4441|Wilfrid Keller}}
 +
{{HistF|2000-02|3401|Wilfrid Keller}}
 +
{{HistC|1989|1-3054|Harvey Dubner}}
 +
{{HistF|1989|1683|Harvey Dubner}}
 +
{{HistF|1989|842|Harvey Dubner}}

Latest revision as of 05:21, 25 October 2024

Current data

ASCII format : n*18^n+1
Base : 18
Count : 16
Max n : 1,000,000
Date : 2023-05-20
1[1], 3, 21, 23, 842, 1683, 3401, 16839, 49963, 60239, 150940, 155928, 219525, 342091, 353901, 612497
Remarks :
The sequence A007648 in OEIS
See additional history at Generalized Cullen primes & Discoverers of Generalized Cullen primes.

Notes

  1. Twin n=1

History