Riesel primes of the form 133•2n-1

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

Current data

k , b : 133 , 2 Count : 31 Nash : 1442 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 11, 15, 19, 31, 59, 75, 103, 163, 235, 375, 615, 767, 1223, 1411, 26655, 47351, 75027, 83323, 121571, 238163, 312359, 359915, 471455, 734835, 809755, 1065655, 1436963, 1609799, 1843619, 2658587

History

• 2024-09-16: Found n = 2658587, Gary Barnes, NPLB K300 Drive 1
• 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
• 2014-04-27: Checked to n = 2000000, David Metcalfe, released
• 2014-04-25: Found n = 1843619, David Metcalfe
• 2014-04-22: Found n = 1609799, David Metcalfe
• 2014-04-22: Reserved by David Metcalfe
• 2014-04-08: Checked to n = 1600000, Predrag Minovic, released
• 2014-02-12: Checked to n = 1500000, Predrag Minovic
• 2014-01-12: Found n = 1436963, Predrag Minovic
• 2013-12-26: Reserved by Predrag Minovic for 1400000 < n < 1500000
• 2011-02-01: Checked to n = 1400000, RPS Drive 6, released
• 2008-12-21: Found n = 1065655, Even Stokkedalen, RPS Drive 6
• 2008-09-19: Found n = 809755, Even Stokkedalen, RPS Drive 6
• 2008-07-25: Found n = 734835, Adam Sutton, RPS Drive 6
• 2008-06-22: Reserved by RPS Drive 6, for n > 600000
• 2006-08-13: Checked to n = 600000, RPS Drive 2, released
• 2006-05-26: Found n = 471455, Predrag Minovic, RPS Drive 2
• 2006-04-18: Found n = 359915, Larry Soule, RPS Drive 2
• 2006-04-07: Found n = 312359, Alexandre de Pereyra, RPS Drive 2
• 2006-03-21: 238163 confirmed, David Metcalfe, RPS Drive 2
• 2006-03-17: Reserved by RPS Drive 2, for n = 210000 - 600000
• 2005-01-10: Checked n = 200000 - 210000, Steven Harvey, released
• 2004-12-29: Found n = 238163, Ray Ballinger
• 2004-05-26: Reserved by Mark Anderson for n ≤ 200000
• 2000-01-25: Found n = 47351, Tom Kuechler