Generalized Woodall primes of the form n•13n-1

Current data

Base : 13 Count : 3 Max n : 1,600,000 Date : 2023-08-10

2, 6, 563528

Remarks :

The sequence A299376 in OEIS See early history at Generalized Woodall news, Generalized Woodall primes, & Generalized Woodall completed ranges.

History

• 2023-08-10: none, Ryan Propper, released
• 2023-04-29: Checked n = 1000000 - 1600000, Ryan Propper
• 2023-04-19: Reserved by Ryan Propper to n = 1600000
• 2023-04-09: Checked n = 610000 - 1000000, Ryan Propper
• 2023-04-01: Reserved by Ryan Propper to n = 1000000
• ?: Checked to n = 610000,  ? per Wiki first page
• 2014-03-13: Checked n = 4000 - 25000, Steven Harvey, double-check
• 2012-10-10: Checked to n = 25000, Thomas Ritschel
• 2010-11-01: Checked n = 12 - 4000, Steven Harvey, double-check
• 2009-12-08: Checked n = 500000 - 570008, PrimeGrid
• 2009-12-08: Found n = 563528, Lennart Vogel, PrimeGrid, (Official announcement)
• 2009-11-12: Checked n = 300000 - 500000, PrimeGrid
• 2009-02-23: Checked n = 12 - 300000, PrimeGrid, double-check n = 12 - 252039
• 2008-06-24: Checked n = 240500 - 252039, Predrag Minovic
• 2008-03-13: Reserved by PrimeGrid to n = 250000 double-check
• 2006-03-31: Checked n = 231900 - 240500, Predrag Minovic
• 2005-08-21: Checked n = 230000 - 231900, Predrag Minovic
• 2005-03-23: Reserved by Predrag Minovic
• 2005-01-03: Checked n = 5000 - 10000, Mark Rodenkirch
• 2004-12-21: Reserved by Mark Rodenkirch to n = 10000
• 2004-12-21: Checked n = 12 - 5000, Mark Rodenkirch
• 2004-12-15: Reserved by Mark Rodenkirch to n = 6000
• 2004-12-03: Reserved by Mark Rodenkirch to n = 5000
• 2004-06-10: Checked to n = 230000, Predrag Minovic