Riesel primes of the form 21285•2n-1

Current data

k , b : 21285 , 2 Type : 315 Count : 78 Nash : 5283 Max n : 1,000,000 Date : 2024-05-18

1, 3, 4, 7, 13, 18, 19, 21, 53, 67, 69, 90, 132, 133, 139, 181, 205, 207, 215, 223, 252, 284, 317, 349, 355, 405, 447, 579, 762, 831, 955, 1333, 1339, 1353, 1433, 1467, 1477, 2124, 2444, 2911, 2945, 3193, 3965, 4167, 4405, 5289, 5311, 5549, 5948, 9689, 9835, 11716, 12481, 13333, 13469, 15002, 17612, 18044, 23813, 24935, 29797, 32286, 39182, 39215, 45711, 46869, 54089, 68538, 71628, 79153, 104211, 146033, 166709, 195341, 294587, 298732, 460829, 605585

History

• 2024-05-18: Checked n = 400000 - 600000, Gary Barnes, released
• 2021-07-20: Checked n = 375000 - 400000, Alexander Jones, released
• 2021-06-01: Checked n = 350000 - 375000, Alexander Jones
• 2021-01-13: Checked n = 325000 - 350000, Alexander Jones
• 2020-10-01: Checked n = 300000 - 325000, Alexander Jones
• 2020-06-17: Checked n = 1 - 300000, Alexander Jones
• 2020-03-17: Reserved by Alexander Jones
• 2018-06-23: Checked n = 600000 - 1000000, RPS Drive 9, released
• 2011-11-23: Checked n = 1 - 1007, Gary Barnes
• 2010-01-23: Found n = 605585, David Metcalfe, RPS Drive 9
• 2010-01-16: Reserved by RPS Drive 9 from n = 600000
• 2009-05-04: Found n = 460829, James P. Burt
• 2008-07-23: Checked n = 1 - 10000, David Harrison
• 2003-06?: Checked to n = 164000, Thomas Ritschel
• 2003-06-09: Found n = 146033, Thomas Ritschel