Riesel primes of the form 2039•2n-1

Current data

k , b : 2039 , 2 Type : Low Count : 4 Nash : 311 Max n : 3,000,000 Date : 2021-06-23

24, 64, 319920, 841312

History

• 2021-06-23: Checked to n = 1000000, Gary Barnes, double-check, results included
• 2015-05-18: Checked n = 600000 - 700000, Karsten Bonath
• 2014-12-04: Checked n = 600000 - 666666, Dmitry Domanov
• 2013-11-11: Checked to n = 3000000, Thomas Ritschel, released
• 2013-10-21: Checked to n = 2500000, Thomas Ritschel
• 2013-09-02: Reserved by Thomas Ritschel
• 2013-08-30: Checked to n = 1025000, RPS Drive 11, released
• 2013-01-09: Checked n = 1000000 - 1010000, Thomas Ritschel, RPS Drive 11
• 2013-01-09: Reserved by RPS Drive 11, from n=1010000
• 2012-02-18: Checked to n = 425000, NPLB Drive 12C, released
• 2012-01-03: Checked to n = 350000, NPLB Drive 12B, released
• 2011-12-31: Reserved by NPLB Drive 12C, for 350001 ≤ n ≤ 425000
• 2011-10-31: Checked to n = 700000, RPS Drive 11, released
• 2011-09-03: Reserved by RPS Drive 11, for n ≥ 666666
• 2010-11-19: Checked to n = 600000, NPLB Drive 11, released
• 2010-03-26: Reserved by NPLB Drive 12B, for 250001 ≤ n ≤ 350000
• 2010-01-05: Checked to n = 250000, NPLB Drive 12A, released
• 2009-12-18: Checked n = 20000 - 50000, Karsten Bonath
• 2009-08-13: Reserved by NPLB Drive 12A, for 50001 ≤ n ≤ 250000
• 2009-06-28: Checked n = 10000 - 20000, Thomas Ritschel
• 2009-06-22: Reserved by NPLB Drive 11, for 425001 ≤ n ≤ 600000
• 2008-12-14: Checked to n = 1000000, James P. Burt
• 2008-05-30: Found n = 841312, James P. Burt
• 2006-12-26: Found n = 319920, Thomas Ritschel