Generalized Woodall primes of the form n•5n-1

Current data

ASCII format : n*5^n-1 Base : 5 Count : 14 Max n : 2,000,000 Date : 2024-10-25

8, 14, 42, 384, 564, 4256, 6368, 21132, 27180, 96584, 349656, 545082, 1052072, 1076030

Remarks :

The sequence A059676 in OEIS

History

• 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
• 2024-08-16: Checked n = 1500000 - 2000000, Richard Kapek, released
• 2024-02-08: Reserved by Richard Kapek for n = 1500000 - 2000000
• 2023-12-03: Checked n = 1100000 - 1500000, Richard Kapek, released
• 2023-10-03: Reserved by Richard Kapek for n = 1100000 - 1500000
• 2023-09-25: Checked n = 1000000 - 1100000, Richard Kapek, released
• 2023-09-25: Found n = 1076030, Richard Kapek
• 2023-09-25: Found n = 1052072, Richard Kapek
• 2023-09-05: Reserved by Richard Kapek for n = 1000000 - 1100000
• ?: Checked n = 240000 - 1000000, Maik Gruenewald
• 2015-04-20: Found n = 545082, Maik Gruenewald
• 2015: Found n = 349656, Maik Gruenewald
• 2014-10-31: Reserved by Maik Gruenewald to n = 300000
• 2014-03-13: Checked to n = 25000, Steven Harvey, double-check
• 2012-10-10: Checked to n = 25000, Thomas Ritschel
• 2010-11-01: Checked n = 4 - 4000, Steven Harvey, double-check
• 2008-09-25: Checked n = 200000 - 240000, Geoffrey Reynolds
• 2008-08-20: Reserved by Geoffrey Reynolds for n = 200000 - 240000
• 2008-08-20: Checked n = 106000 - 200000, Geoffrey Reynolds
• 2007-12-17: Reserved by Geoffrey Reynolds for n = 106000 - 200000
• 2005-01-03: Checked n = 5000 - 10000, Mark Rodenkirch
• 2004-12-21: Reserved by Mark Rodenkirch to n = 10000
• 2004-12-21: Checked n = 4 - 5000, Mark Rodenkirch
• 2004-12-15: Reserved by Mark Rodenkirch to n = 6000
• 2004-12-03: Reserved by Mark Rodenkirch to n = 5000
• 2004-06-22: Checked to n = 106000, Predrag Minovic
• 2004-06-21: Found n = 96584, Predrag Minovic
• 2004-06-14: Reserved by Predrag Minovic to n = 106000
• 2000-04-03: Found n = 27180, Ray Ballinger
• 2000-04-03: Found n = 21132, Ray Ballinger
• 2000-02-14: Found n = 6368, Joe DeMaio
• 1997-03-03: Found n = 4256, Carlos Rivera