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Generalized Woodall primes of the form n•9n-1
Current data
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Remarks : |
The sequence A242202 in OEIS |
Notes
History
- 2024-11-03: Found n = 5287180, Ryan Propper, Serge Batalov
- 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
- 2024-02-14: Found n = 4788920, Ryan Propper, Serge Batalov
- 2014-07-09: Checked n = 250000 - 975000, Serge Batalov
- 2014-03-13: Checked to n = 25000, Steven Harvey, double-check
- 2012-10-10: Checked to n = 25000, Thomas Ritschel
- 2011-03-09: Checked n = 200000 - 250000, Steven Harvey
- 2011-01-31: Reserved by Steven Harvey for n = 200000 - 250000
- 2010-11-01: Checked n = 8 - 4000, Steven Harvey, double-check
- 2008-12-14: Checked n = 140000 - 200000, Mark Rodenkirch
- 2008-11-26: Reserved by Mark Rodenkirch to n = 200000
- 2008-11-26: Checked n = 100000 - 140000, Mark Rodenkirch
- 2007-02-08: Checked n = 60000 - 100000, Steven Harvey
- 2007-01-06: Reserved by Steven Harvey to n = 100000
- 2005-01-03: Checked n = 5000 - 10000, Mark Rodenkirch
- 2004-12-21: Reserved by Mark Rodenkirch to n = 10000
- 2004-12-21: Checked n = 8 - 5000, Mark Rodenkirch
- 2004-12-15: Reserved by Mark Rodenkirch to n = 6000
- 2004-12-03: Reserved by Mark Rodenkirch to n = 5000
- 2004-10-12: Checked to n = 60000, Steven Harvey
- 2004-10-06: Reserved by Steven Harvey to n = 60000
- 2000-06-03: Found n = 24500, Ray Ballinger
- 2000-02-05: Found n = 4198, Joe DeMaio
