Riesel primes of the form 2049•2n-1

Current data

k , b : 2049 , 2 Type : 3 Count : 69 Nash : 2853 Max n : 1,310,000 Date : 2015-05-18

4, 7, 13, 15, 20, 23, 28, 29, 35, 37, 40, 44, 59, 64, 80, 96, 99, 119, 136, 143, 188, 317, 389, 415, 444, 476, 499, 557, 559, 807, 904, 1013, 1168, 1624, 2080, 3940, 4400, 8971, 9676, 10124, 11255, 25243, 29063, 29557, 32411, 33743, 38031, 67164, 69855, 73384, 85171, 118165, 118968, 230960, 255708, 348024, 367431, 543187, 709108, 767267, 800189, 819443, 885996, 915180, 943349, 951221, 1102720, 1111613, 1267508

History

• 2015-05-18: Checked n = 600000 - 700000, Karsten Bonath
• 2015-04-20: Checked to n = 1310000, RPS Drive 12
• 2015-03-08: Found n = 1267508, Thomas Ritschel, RPS Drive 12
• 2014-12-04: Checked n = 600000 - 666666, Dmitry Domanov
• 2013-09-09: Found n = 1111613, James P. Burt, RPS Drive 12
• 2013-09-07: Found n = 1102720, James P. Burt, RPS Drive 12
• 2013-08-30: Checked to n = 1025000, RPS Drive 11, released
• 2013-08-28: Reserved by RPS Drive 12, n ≥ 1025000
• 2012-06-08: Found n = 951221, Larry Soule, RPS Drive 11
• 2012-05-30: Found n = 943349, Larry Soule, RPS Drive 11
• 2012-04-15: Found n = 915180, Peter Benson, RPS Drive 11
• 2012-02-29: Found n = 885996, Peter Benson, RPS Drive 11
• 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
• 2011-12-12: Found n = 819443, David Metcalfe, RPS Drive 11
• 2011-11-27: Found n = 800189, David Metcalfe, RPS Drive 11
• 2011-11-12: Found n = 767267, Thomas Ritschel, RPS Drive 11
• 2011-09-13: Found n = 709108, Peter Benson, RPS Drive 11
• 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
• 2010-03-08: Found n = 543187, Gary Barnes, NPLB Drive 11
• 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
• 2009-06-15: Checked to n = 95000, Thomas Ritschel, released
• 2009-03-31: Reserved by Thomas Ritschel, for 20000 < n < 500000