Difference between revisions of "Cullen prime 69"

Latest revision as of 15:12, 26 April 2025

Reserved! This sequence is currently reserved by: PrimeGrid

ASCII format :	n*69^n+1
Base :	69
Count :	1
Max `n` :	3,890,672
Date :	2025-04-26
Reserved :	PrimeGridPrimeGrid/Reserved

Remarks :

Update Maxn & Reserved when PrimeGrid has completed testing.

2025-04-26: Checked n = 1000000 - 3890672, PrimeGrid Generalized Cullen Prime Search
2025-04-17: Found n = 4052186, Mark Williams, PrimeGrid Generalized Cullen Prime Search, (Official announcement)
2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
2016-10-21: Reserved by PrimeGrid Generalized Cullen Prime Search
?: Checked n = 1 - 1000000, PrimeGrid Generalized Cullen Prime Search, double-check n = 1 - 100100, see PRPnet Maxn completed
2004: Checked n = 68009 - 100100, Predrag Minovic
2004: Checked n = 37419 - 68009, Günter Löh
2000-12: Checked n = 4201 - 37419, Günter Löh
1999-12: Checked n = 1 - 4201, Wilfrid Keller

@@ Line 1: / Line 1: @@
 {{Cullen prime
 |CuBase=69
-|CuMaxn={{#expr: floor( {{Multi Reservation:17-NMax}} * ln( {{Multi Reservation:17-KMax}} ) / ln(69) ) }}
+|CuMaxn=3890672
-|CuDate={{Multi Reservation:17-Date}}
+|CuDate=2025-04-26
-|CuReserved={{Multi Reservation:17-Contributor}}
+|CuReserved=PrimeGrid
 |CuMultiRes=
 |CuNlist=
-|CuRemarks=Base is part of [[Multi Reservation:17]] for the [[PrimeGrid Generalized Cullen Prime Search]].<br>Tests are handed out by size so the {{Vn}}-value from the multi-reservation is adjusted accordingly.
+4052186;140607
+|CuRemarks=Update Maxn & Reserved when PrimeGrid has completed testing.
 }}
 ==History==
+{{HistC|2025-04-26|1000000-3890672|PrimeGrid Generalized Cullen Prime Search}}
+{{HistF|2025-04-17|4052186|Mark Williams,PrimeGrid Generalized Cullen Prime Search|P#11337}}, ([http://www.primegrid.com/download/GC69-4052186.pdf Official announcement])
 {{HistC|2024-10-25|1-100000|Gary Barnes|1058845}}, double-check, released
 {{HistR|2016-10-21|PrimeGrid Generalized Cullen Prime Search|P#7073}}
@@ Line 16: / Line 19: @@
 {{HistC|2000-12|4201-37419|Günter Löh}}
 {{HistC|1999-12|1-4201|Wilfrid Keller}}
-[[Category:PrimeGrid Generalized Cullen Prime Search]]