Riesel primes of the form 2289•2n-1

Current data

k , b : 2289 , 2 Type : 3 Count : 59 Nash : 3107 Max n : 1,310,000 Date : 2015-05-18

3, 9, 11, 15, 17, 25, 29, 43, 47, 105, 116, 124, 127, 128, 129, 185, 193, 245, 255, 263, 381, 795, 1037, 1067, 1439, 1955, 3512, 4201, 5443, 6665, 7973, 8771, 9479, 12944, 19701, 23257, 23912, 24797, 27849, 34988, 39148, 44968, 52556, 57028, 63749, 65189, 68764, 82851, 102868, 189793, 193959, 364833, 368687, 586231, 595593, 628821, 831449, 919427, 1287743

History

• 2015-05-18: Checked n = 600000 - 700000, Karsten Bonath
• 2015-04-20: Checked to n = 1310000, RPS Drive 12
• 2015-03-26: Found n = 1287743, Thomas Ritschel, RPS Drive 12
• 2013-08-30: Checked to n = 1025000, RPS Drive 11, released
• 2013-08-28: Reserved by RPS Drive 12, n ≥ 1025000
• 2012-04-22: Found n = 919427, 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
• 2011-12-20: Found n = 831449, David Metcalfe, 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
• 2010-10-20: Found n = 595593, Gary Barnes, NPLB Drive 11
• 2010-09-08: Found n = 586231, Gary Barnes, NPLB Drive 11
• 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