Generalized Woodall primes of the form n•28n-1

Current data

ASCII format : n*28^n-1 Base : 28 Count : 13 Max n : 400,000 Date : 2024-10-25

2, 5, 6, 12, 20, 47, 71, 624, 1149, 2399, 8048, 30650, 39161

History

• 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
• 2023-07-23: Checked n = 4000 - 32768?, (puadz), double-check
• 2023-07-03: Reserved by (puadz), double-check
• 2017-12-06: Checked n = 200000 - 400000, Steven Harvey
• 2017-10-20: Reserved by Steven Harvey to n = 400000
• 2014-03-13: Checked to n = 25000, Steven Harvey, double-check
• 2012-10-10: Checked to n = 25000, Thomas Ritschel
• 2011-07-13: Checked n = 125000 - 200000, Steven Harvey
• 2011-05-21: Reserved by Steven Harvey for n = 125000 - 200000
• 2010-11-01: Checked n = 27 - 4000, Steven Harvey, double-check
• 2009-11-17: Checked n = 32768? - 125000, Steven Harvey
• 2009-10-05: Found n = 39161, Steven Harvey
• 2009-10-04: Reserved by Steven Harvey to n = 125000
• 2005-01-03: Checked n = 5000 - 10000, Mark Rodenkirch
• 2004-12-21: Reserved by Mark Rodenkirch to n = 10000
• 2004-12-21: Checked n = 27 - 5000, Mark Rodenkirch
• 2004-12-15: Reserved by Mark Rodenkirch to n = 6000
• 2004-12-03: Reserved by Mark Rodenkirch to n = 5000
• 2003-02-03: Found n = 30650, Steven Harvey
• 2000-02-04: Found n = 2399, Joe DeMaio