Generalized Woodall primes of the form n•22n-1

Current data

ASCII format : n*22^n-1 Base : 22 Count : 9 Max n : 400,000 Date : 2023-07-03

2, 5, 140, 158, 263, 795, 992, 6143, 341351

History

• 2023-07-03: Checked n = 4000 - 40000?, (puadz), double-check
• 2023-07-03: Found n = 6143, (puadz), missing prime found
• 2023-06-17: Reserved by (puadz), double-check
• 2017-10-10: Checked n = 200000 - 400000, Steven Harvey
• 2017-09-22: Found n = 341351, Steven Harvey
• 2017-06-01: 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
• 2011-05-21: Checked n = 125000 - 200000, Steven Harvey
• 2011-04-11: Reserved by Steven Harvey for n = 125000 - 200000
• 2010-11-01: Checked n = 21 - 4000, Steven Harvey
• 2009-10-06: Checked n = 40000 - 125000, Steven Harvey
• 2009-09-15: Reserved by Steven Harvey for n = 40000 - 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 = 21 - 5000, Mark Rodenkirch
• 2004-12-15: Reserved by Mark Rodenkirch to n = 6000
• 2004-12-03: Reserved by Mark Rodenkirch to n = 5000