Generalized Woodall primes of the form n•8n-1

Current data

ASCII format : n*8^n-1 Base : 8 Count : 16 Max n : 513,000 Date : 2024-10-25

1, 2, 7, 12, 25, 44, 219, 252, 507, 1155, 2259, 2972, 4584, 12422, 13905, 75606

Remarks :

The sequence A242201 in OEIS

History

• 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
• 2014-03-13: Checked to n = 25000, Steven Harvey, double-check
• 2014: Reservation dropped, Serge Batalov, no work reported
• 2013-06-08: Reserved by Serge Batalov
• 2013?: Checked n = 400000 - 513000, Steven Harvey
• 2012-11-21: Reserved by Steven Harvey to n = 666666
• 2012-10-10: Checked to n = 25000, Thomas Ritschel
• 2011-12-22: Checked n = 300000 - 400000, Steven Harvey
• 2010-11-01: Checked n = 7 - 4000, Steven Harvey, double-check
• 2009-02-12: Checked n = 183245 - 211900, Steven Harvey
• 2009-01-03: Reserved by Steven Harvey for n = 183245 - 211900
• 2007-11-29: Checked n = 217500 - 300000, Thomas Wolter
• 2006-02-24: Checked n = 211900 - 217500, Thomas Wolter
• 2006-02-24: Reserved by Thomas Wolter for n = 211900 - 300000
• 2005-01-03: Checked n = 5000 - 10000, Mark Rodenkirch
• 2004-12-21: Reserved by Mark Rodenkirch to n = 10000
• 2004-12-21: Checked n = 7 - 5000, Mark Rodenkirch
• 2004-12-15: Reserved by Mark Rodenkirch to n = 6000
• 2004-12-03: Reserved by Mark Rodenkirch to n = 5000
• 2004-11-12: Checked n = 166667 - 183245, Wilfrid Keller, released
• 2004-09-27: Reserved by Wilfrid Keller
• 2004-08-09: Checked to n = 166666, Steven Harvey
• 2004-03-30: Reserved by Steven Harvey to n = 166666
• 2002-11-01: Found n = 75606, Steven Harvey
• 2000-03-06: Found n = 13905, Dirk Augustin
• 2000-02-27: Found n = 12422, Dirk Augustin
• 2000-02-05: Found n = 4584, Joe DeMaio
• 2000-02-04: Found n = 2972, Joe DeMaio