Riesel primes of the form 141•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

k , b : 141 , 2 Type : 3 Count : 32 Nash : 1901 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 2, 7, 10, 11, 13, 38, 46, 61, 170, 299, 445, 815, 983, 4237, 6146, 7255, 7459, 7585, 8411, 8647, 14855, 20338, 21671, 29293, 89318, 92498, 98686, 121142, 250271, 619742, 878798

History

• 2024-05-16: Reserved by NPLB K300 Drive 1 for n > 2300000
• 2022-04-10: Checked to n = 2300000, RPS Megabit Drive 2
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2019-08-18: Checked to n = 2200000, RPS Megabit Drive 2
• 2015-06-19: Reserved by RPS Megabit Drive 2 for n > 2000000
• 2012-11-06: Checked to n = 2000000, Peter Benson, released
• 2012-10-22: Reserved by Peter Benson from n=1100000
• 2012-10-09: Checked to n = 1100000, Adam Sutton, released
• 2009-05-19: Checked to n = 1100000, Adam Sutton
• 2009-03-13: Reserved by Adam Sutton
• 2009-03-13: Checked to n = 900000, Michael Curtis released
• 2009-02-25: Found n = 878798, Michael Curtis
• 2009-02-13: Checked to n = 800000, Michael Curtis
• 2008-12-03: Checked to n = 800000, Michael Curtis
• 2008-07-14: Checked to n = 700000, Michael Curtis
• 2008-01-07: Reserved by Michael Curtis
• 2008-01-06: Checked to n = 640000, Borys Jaworski, released
• 2007-09-14: Checked to n = 620000, Borys Jaworski, released
• 2007-09-14: Found n = 619742, Borys Jaworski
• 2007-09-03: Checked to n = 600000, Borys Jaworski
• 2007-07-06: Reserved by Borys Jaworski
• 2006-04-27: Checked n = 100000 - 200000, Thomas Ritschel, double-check
• 2006-03-23: Checked to n = 500000, Thomas Ritschel, released
• 2006-03-19: Found n = 250271, Thomas Ritschel
• 2006-02-26: Reserved by Thomas Ritschel
• 2005-01-10: Checked n = 200000 - 210000, Steven Harvey, released
• 2004-05-26: Reserved by Mark Anderson for n ≤ 200000