Riesel primes of the form 2445•2n-1

Current data

k , b : 2445 , 2 Type : 315 Count : 54 Nash : 2414 Max n : 2,000,000 Date : 2024-04-14

1, 3, 4, 15, 19, 27, 28, 63, 109, 111, 223, 294, 315, 333, 339, 363, 459, 609, 627, 678, 748, 1366, 1483, 1603, 2049, 2800, 3766, 4273, 4581, 7785, 8238, 8751, 9210, 10533, 12421, 20167, 20703, 21213, 28005, 31401, 39913, 43333, 103636, 124558, 162364, 274273, 416077, 452044, 528423, 805756, 908461, 1377351, 1495063, 1532647

History

• 2024-04-14: Checked to n = 2000000, RPS Drive 7, released
• 2017-03-24: Found n = 1495063, Thomas Ritschel, RPS Drive 7
• 2015-07-29: Found n = 1532647, Michael Curtis, RPS Drive 7
• 2014-02-05: Found n = 1377351, David Metcalfe, RPS Drive 7
• 2012-02-18: Checked to n = 425000, NPLB Drive 12C, released
• 2012-01-06: Reserved by NPLB Drive 12C, for 350001 ≤ n ≤ 425000
• 2012-01-03: Checked to n = 350000, NPLB Drive 12B, released
• 2011-09-13: Reserved to n = 2000000, RPS Drive 7
• 2010-12-23: Reserved by NPLB Drive 12B, for 250001 ≤ n ≤ 350000
• 2010-11-19: Checked to n = 600000, NPLB Drive 11, released
• 2010-05-02: Found n = 908461, Peter Benson, RPS Drive 7
• 2010-02-13: Found n = 805756, Peter Benson, RPS Drive 7
• 2010-01-28: 528423 confirmed, Vaughan Davies, NPLB Drive 11
• 2010-01-05: Checked to n = 250000, NPLB Drive 12A, released
• 2009-12-18: Checked n = 20000 - 50000, Karsten Bonath
• 2009-08-22: Reserved to n = 1000000, RPS Drive 7
• 2009-08-13: Reserved by NPLB Drive 12A, for 50001 ≤ n ≤ 250000
• 2009-07-21: 452044 confirmed, Chris Chatfield, NPLB Drive 11
• 2009-06-28: Checked n = 10000 - 20000, Thomas Ritschel
• 2009-06-22: Reserved by NPLB Drive 11, for 425001 ≤ n ≤ 600000
• 2009-04-04: Found n = 528423, Peter Benson, RPS Drive 7
• 2009-03-01: Found n = 452044, David Metcalfe, RPS Drive 7
• 2009-02-12: Found n = 416077, James P. Burt, RPS Drive 7
• 2009-02-06: Reserved by RPS Drive 7, for 360000 ≤ n ≤ 600000