Generalized Woodall primes of the form n•3n-1

Reserved! This sequence is currently reserved by: Ryan Propper

Current data

ASCII format : n*3^n-1 Base : 3 Count : 27 Max n : 1,200,000 Date : 2023-04-22 Reserved : Ryan PropperRyan Propper/Reserved

1, 2, 6, 10, 18, 40, 46, 86, 118, 170, 1172, 1698, 1810, 2268, 4338, 18362, 72662, 88392, 94110, 161538, 168660, 292340, 401208, 560750, 1035092, 1934244, 2456292

Remarks :

The sequence A006553 in OEIS See early history at Generalized Woodall news and Generalized Woodall primes

History

• 2023-04-22: Found n = 2456292, Ryan Propper
• 2023-04-21: Found n = 1934244, Ryan Propper
• 2023-04-21: Reserved by Ryan Propper
• 2021-09-17: Reservation dropped, Predrag Minovic, Thomas Ritschel
• 2020-02-25: Checked n = 1058000 - 1200000, Thomas Ritschel per Wiki edit
• 2014-03-13: Checked n = 4000 - 25000, Steven Harvey, double-check n = 4000 - 10000
• 2013?: Checked n = 1000000 - 1058000, Predrag Minovic
• 2013-06-17: Found n = 1035092, Predrag Minovic
• 2013-01-03: Reserved by Predrag Minovic for n = 1000000 - 1500000
• 2011-11-14: Checked n = 750000 - 1000000, Ricky L. Hubbard
• 2011-09-16: Reserved by Ricky L. Hubbard to n = 1000000
• 2011-09-16: Checked n = 403000 - 750000, Ricky L. Hubbard
• 2011-08-18: Found n = 560750, Ricky L. Hubbard
• 2011-08-05: Reserved by Ricky L. Hubbard for n = 403000 - 750000
• 2010-11-01: Checked n = 2 - 4000, Steven Harvey, double-check
• 2005-03-23: Checked n = 302000 - 403000, Predrag Minovic
• 2005-01-03: Checked n = 5000 - 10000, Mark Rodenkirch
• 2004-12-21: Reserved by Mark Rodenkirch to n = 10000
• 2004-12-21: Checked n = 2 - 5000, Mark Rodenkirch
• 2004-12-15: Reserved by Mark Rodenkirch to n = 6000
• 2004-12-03: Reserved by Mark Rodenkirch to n = 5000
• 2004-11-08: Found n = 401208, Predrag Minovic
• 2004-10-27: Checked n = 300000 - 302000, 325000 - 395000, Predrag Minovic
• 2004-09-15: Checked n = 256000 - 300000, Predrag Minovic
• 2004-08-17: Found n = 292340, Predrag Minovic
• 2004-06-10: Reserved by Predrag Minovic to n = 400000
• 2004-06-10: Checked n = 161000 - 256000, 325000 - 360000, Predrag Minovic
• 2004-04-20: Found n = 168660, Predrag Minovic
• 2004-04-19: Found n = 161538, Predrag Minovic
• 2004-04-16: Reserved by Predrag Minovic to n = 210000
• 2004-04-16: Checked n = 110000 - 161000, Predrag Minovic
• 2004-04-07: Reserved by Predrag Minovic to n = 160000
• 2004-03-26: Reserved by Predrag Minovic to n = 140000
• 2004-02?: Checked to n = 110000, Steven Harvey
• 2004-02-19: Found n = 94110, Steven Harvey
• 2004-02-17: Reserved by Steven Harvey to n = 110000
• 2003-11-03: Found n = 88392, Steven Harvey
• 2000-05-04: Found n = 72662, Yves Gallot
• 2000-02-07: Found n = 18362, Ray Ballinger
• 1997-03-03: Found n = 4338, Carlos Rivera