Riesel primes of the form 1001•2n-1

Reserved! This sequence is currently part of Multi Reservation 3: NPLB Drive 18.

Current data

k , b : 1001 , 2 Count : 44 Nash : 1525 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 6, 14, 54, 58, 70, 126, 138, 154, 182, 186, 326, 390, 418, 482, 506, 754, 818, 846, 858, 1094, 1870, 3234, 5326, 9998, 10442, 20782, 38206, 39258, 39666, 40434, 59042, 123990, 180130, 206082, 885618, 901926, 1381338, 2101062, 2289438, 3158422, 3467258, 3486566, 3501038

History

• 2024-11-16: Found n = 3501038, Andy Hedges
• 2024-08-27: Found n = 3486566, Andy Hedges
• 2024-08-24: Found n = 3467258, Andy Hedges
• 2023-09-28: Found n = 3158422, Andy Hedges
• 2023-03-28: 2101062 confirmed, Max Dettweiler, NPLB Drive 18
• 2023-01-21: Reserved by NPLB Drive 18, for n = 2000000 - 3000000
• 2023-01-21: Checked n = 1000000 - 2000000, NPLB Drive 14, released
• 2020-06-03: Found n = 2289438, Andy Hedges
• 2020-05-27: Found n = 2101062, Andy Hedges
• 2014-11-30: 1381338 confirmed, Lennart Vogel, NPLB Drive 14
• 2014-10-22: Checked n = 1700000 - 1900000, Peter Benson
• 2014-05-15: Checked n = 1570000 - 1700000, Peter Benson
• 2014-01-26: Checked n = 1400000 - 1570000, Peter Benson
• 2013-08-12: Checked n = 1300000 - 1400000, Peter Benson
• 2013-06-04: Found n = 1381338, Peter Benson
• 2012-09-09: Checked n = 1200000 - 1300000, Peter Benson
• 2012-04-03: Checked n = 1100000 - 1200000, Peter Benson
• 2011-12-31: Reserved by NPLB Drive 14, for n = 1000000 - 2000000
• 2011-09-11: Checked n = 1000000 - 1100000, Peter Benson
• 2011-07-11: Checked n = 600000 - 1000000, NPLB Drive 7, released
• 2011-04-17: Checked n = 980000 - 1000000, Peter Benson
• 2011-04-11: 901926 confirmed, Pietari Snow, NPLB Drive 7
• 2011-04-09: 885618 confirmed, Lennart Vogel, NPLB Drive 7
• 2011-03-12: Checked n = 960000 - 980000, Peter Benson
• 2011-02-04: Checked n = 940000 - 960000, Peter Benson
• 2011-01-02: Checked n = 920000 - 940000, Peter Benson
• 2010-11-20: Checked n = 900000 - 920000, Peter Benson
• 2010-10-09: Checked n = 880000 - 900000, Peter Benson
• 2010-09-10: Found n = 901926, Peter Benson
• 2010-08-29: Found n = 885618, Peter Benson
• 2010-08-15: Checked n = 860000 - 880000, Peter Benson
• 2010-06-27: Checked n = 840000 - 860000, Peter Benson
• 2010-05-21: Checked n = 820000 - 840000, Peter Benson
• 2010-04-10: Checked n = 800000 - 820000, Peter Benson
• 2010-03-09: Checked n = 780000 - 800000, Peter Benson
• 2010-02-08: Checked n = 770000 - 780000, Peter Benson
• 2010-02-02: Checked to n = 770000, Peter Benson
• 2008-12-22: Checked n = 333200 - 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for n = 600000 - 1000000
• 2008-08-20: Checked n = 35000 - 50000, Karsten Bonath
• 2008-07-29: Checked n = 10000 - 35000, Karsten Bonath
• 2008-03-25: Checked n = 260000 - 333200, NPLB Drive 2, released
• 2008-01-22: Reserved by NPLB Drive 2, for n = 260000 - 333200
• 2008-01-21: Reserved by NPLB Drive 1, for n = 333200 - 600000
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes
• 2003-07-04: Found n = 206082, James S. Griffin
• 2003-07-12: Found n = 180130, James S. Griffin
• 2003-04-25: Found n = 123990, Andrew J. Rupinski