Riesel primes of the form 210885•2n-1

Current data

k , b : 210885 , 2 Type : 315 Count : 107 Nash : 5390 Max n : 700,000 Date : 2025-05-04

2, 4, 7, 11, 12, 14, 19, 31, 33, 36, 46, 67, 73, 74, 86, 89, 112, 116, 156, 213, 217, 223, 260, 275, 276, 290, 351, 355, 370, 374, 529, 604, 607, 633, 651, 693, 705, 729, 799, 836, 856, 867, 886, 1005, 1036, 1162, 1190, 1479, 1862, 2219, 2449, 2786, 2875, 2925, 2996, 3980, 4736, 4824, 5001, 5331, 5595, 9551, 11270, 11403, 12530, 12573, 12804, 13351, 13416, 14764, 16595, 17290, 17732, 18299, 18991, 24974, 26794, 27723, 31126, 32896, 34037, 34224, 54044, 54716, 55336, 57180, 63549, 69671, 76716, 87224, 103466, 109235, 115579, 124415, 124985, 126773, 145659, 156655, 164059, 183815, 195687, 213029, 270025, 295335, 301665, 315639, 549843

History

• 2025-05-04: Checked n = 1 - 700000, Gary Barnes, double-check n = 1 - 645000
• 2008-01-03: Checked n = 500000 - 645000, RPS Drive K210885
• 2005-12-06: Found n = 549843, Borys Jaworski, RPS Drive K210885
• 2004-04-05: Checked n = 230000 - 500000, RPS Drive K210885
• 2003-12-01: Found n = 270025, Jocelyn Larouche, RPS Drive K210885
• 2003-11-26: Found n = 301665, Mark Anderson, RPS Drive K210885
• 2003-11-25: Found n = 295335, Luigi Morelli, RPS Drive K210885
• 2003-11-25: Found n = 315639, Mark Anderson, RPS Drive K210885
• 2003-11-24: Reserved by RPS Drive K210885 to n = 1000000
• 2003-06-21: Checked n = 145659 - ~225000, Jocelyn Larouche
• 2003-11-05: Found n = 213029, Jocelyn Larouche
• 2003-10-17: Found n = 195687, Jocelyn Larouche
• 2003-10-09: Found n = 183815, Jocelyn Larouche
• 2003-09-22: Found n = 164059, Jocelyn Larouche
• 2003-09-07: Found n = 156655, Jocelyn Larouche
• 2003-09-02: Found n = 145659, Jocelyn Larouche
• 2003-07-29: Found n = 126773, Jocelyn Larouche
• 2003-07-28: Found n = 124985, Jocelyn Larouche
• 2003-07-11: Found n = 124415, Jocelyn Larouche
• 2003-07-04: Found n = 115579, Jocelyn Larouche
• 2003-06-21: Found n = 109235, Jocelyn Larouche
• 2003-06-21: Checked n = 1 - 145659?, Jocelyn Larouche