Generalized Woodall primes of the form n•15n-1

Current data

ASCII format : n*15^n-1 Base : 15 Count : 12 Max n : 1,600,000 Date : 2024-10-25

2, 10, 14, 2312, 16718, 26906, 27512, 41260, 45432, 162454, 217606, 1527090

Remarks :

The sequence A299378 in OEIS

History

• 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
• 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
• 2023-04-14: Found n = 1527090, Ryan Propper
• 2023-04-09: Checked n = 500000 - 1000000, Ryan Propper
• 2023-04-01: Reserved by Ryan Propper to n = 1000000
• 2015-10-06: Checked n = 250000 - 500000, Steven Harvey
• 2015-04-28: Reserved by Steven Harvey to n = 500000
• 2014-03-13: Checked to n = 25000, Steven Harvey, double-check
• 2012-10-10: Checked to n = 25000, Thomas Ritschel
• 2011-04-12: Checked n = 200000 - 250000, Steven Harvey
• 2011-02-23: Found n = 217606, Steven Harvey
• 2011-01-31: Reserved by Steven Harvey for n = 200000 - 250000
• 2010-11-01: Checked n = 14 - 4000, Steven Harvey, double-check
• 2009-03-13: Checked n = 45000 - 200000, Mark Rodenkirch
• 2009-01-26: Found n = 162454, Mark Rodenkirch
• 2008-12-14: Found n = 45432, Mark Rodenkirch
• 2008-12-10: Reserved by Mark Rodenkirch 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 = 14 - 5000, Mark Rodenkirch
• 2004-12-15: Reserved by Mark Rodenkirch to n = 6000
• 2004-12-03: Reserved by Mark Rodenkirch to n = 5000
• 2004-01-09: Found n = 41260, Steven Harvey
• 2003-01-10: Found n = 27512, Steven Harvey
• 2003-01-09: Found n = 26906, Steven Harvey
• 2000-08-11: Found n = 16718, Dirk Augustin
• 2000-02-04: Found n = 2312, Joe DeMaio