Riesel primes of the form 1101•2n-1

Current data

k , b : 1101 , 2 Type : 3 Count : 40 Nash : 1707 Max n : 2,000,000 Date : 2024-12-18

3, 15, 37, 39, 43, 67, 85, 97, 142, 177, 205, 307, 327, 655, 1243, 1639, 2073, 2335, 4885, 9685, 12198, 12862, 13723, 15454, 17727, 21733, 25405, 37885, 53749, 71787, 271518, 300967, 380967, 393229, 588999, 701727, 1450203, 1641145, 1794417, 1929297

History

• 2024-12-18: Checked n = 1900000 - 2000000, Gary Barnes, released
• 2024-09-10: Checked n = 1 - 200000, (Alex_soldier), double-check, results included
• 2016-02-20: Found n = 1929297, Peter Benson
• 2014-10-22: Checked n = 1700000 - 1900000, Peter Benson
• 2014-08-11: Found n = 1794417, Peter Benson
• 2014-05-15: Checked n = 1570000 - 1700000, Peter Benson
• 2014-03-27: Found n = 1641145, Peter Benson
• 2014-01-26: Checked n = 1400000 - 1570000, Peter Benson
• 2013-08-12: Checked n = 1300000 - 1400000, Peter Benson
• 2012-10-06: Found n = 1450203, Peter Benson
• 2012-09-09: Checked n = 1200000 - 1300000, Peter Benson
• 2012-04-03: Checked n = 1100000 - 1200000, Peter Benson
• 2011-09-11: Checked n = 1000000 - 1100000, Peter Benson
• 2011-04-17: Checked n = 980000 - 1000000, Peter Benson
• 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
• 2010-08-15: 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
• 2009-08-02: Found n = 701727, Peter Benson
• 2009-02-23: Checked n = 350000 - 479264, NPLB Drive 9D, results fill-in only, released
• 2009-02-16: Checked n = 200000 - 350000, NPLB Drive 9C, results fill-in only, released
• 2009-01-28: Checked n = 50000 - 200000, NPLB Drive 9A, released
• 2009-01-21: Reserved by NPLB Drive 9D, for n = 350000 - 479264 results fill-in only
• 2009-01-21: Reserved by NPLB Drive 9C, for n = 200000 - 350000 results fill-in only
• 2009-01-05: Reserved by NPLB Drive 9A, for n = 50000 - 200000
• 2008-12-30: Found n = 588999, Peter Benson
• 2008-08-20: Checked n = 35000 - 50000, Karsten Bonath
• 2008-07-29: Checked n = 10000 - 35000, Karsten Bonath
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes
• 2007-06-03: Found n = 393229, Peter Benson
• 2007-04-15: Found n = 380967, Peter Benson
• 2006-02-21: Found n = 300967, Peter Benson
• 2005-09-10: Found n = 271518, Peter Benson