Riesel primes of the form 1087•2n-1

Current data

k , b : 1087 , 2 Type : Low Count : 10 Nash : 316 Max n : 1,900,000 Date : 2014-10-22

25, 73, 97, 1777, 22333, 81973, 1346917, 2293345, 3164677, 3336385

History

• 2014-10-22: Checked to n = 1900000, Peter Benson
• 2014-05-15: Checked to n = 1700000, Peter Benson
• 2014-01-26: Checked to n = 1570000, Peter Benson
• 2013-08-12: Checked to n = 1400000, Peter Benson
• 2012-09-09: Checked to n = 1300000, Peter Benson
• 2012-04-03: Checked to n = 1200000, Peter Benson
• 2012-03-16: Found n = 3336385, Peter Benson
• 2012-03-13: Found n = 3164677, Peter Benson
• 2011-12-21: Found n = 2293345, Peter Benson
• 2011-09-11: Checked to n = 1100000, Peter Benson
• 2011-04-17: Checked to n = 1000000, Peter Benson
• 2011-03-12: Checked to n = 980000, Peter Benson
• 2011-02-04: Checked to n = 960000, Peter Benson
• 2011-01-02: Checked to n = 940000, Peter Benson
• 2010-11-20: Checked to n = 920000, Peter Benson
• 2010-10-09: Checked to n = 900000, Peter Benson
• 2010-08-15: Checked to n = 880000, Peter Benson
• 2010-06-27: Checked to n = 860000, Peter Benson
• 2010-06-03: Found n = 1346917, Peter Benson
• 2010-05-21: Checked to n = 840000, Peter Benson
• 2010-04-10: Checked to n = 820000, Peter Benson
• 2010-03-09: Checked to n = 800000, Peter Benson
• 2010-02-08: Checked to n = 780000, Peter Benson
• 2010-02-02: Checked to n = 770000, Peter Benson
• 2009-02-24: Checked to n = 479264, NPLB Drive 9D, released
• 2009-02-16: Checked to n = 350000, NPLB Drive 9C, released
• 2009-01-25: Checked to n = 200000, NPLB Drive 9A, released
• 2009-01-21: Reserved by NPLB Drive 9D, for 350000 ≤ n ≤ 479264
• 2009-01-21: Reserved by NPLB Drive 9C, for 200000 ≤ n ≤ 350000
• 2009-01-05: Reserved by NPLB Drive 9A, for 50000 ≤ n ≤ 200000
• 2008-12-02: Checked to n = 1000000, James P. Burt
• 2008-08-20: Checked n = 35000 - 50000, Karsten Bonath
• 2008-07-29: Checked n = 10000 - 35000, Karsten Bonath
• 2007-07-06: Checked to n = 10000, Gary Barnes