Riesel primes of the form 7977•2n-1

Current data

k , b : 7977 , 2 Type : 3 Count : 35 Nash : 1538 Max n : 630,000 Date : 2022-12-17

2, 8, 12, 26, 48, 60, 162, 416, 420, 1844, 2376, 3068, 3192, 3284, 3924, 4112, 10560, 12024, 13008, 20952, 23052, 23816, 31265, 35378, 40997, 55937, 58200, 84584, 105797, 125756, 220728, 260226, 295913, 463376, 626184

History

• 2022-12-17: Checked n = 500000 - 630000, Alexander Jones, double-check, released
• 2022-11-10: Checked n = 150000 - 500000, Alexander Jones
• 2022-09-14: Checked n = 50000 - 150000, Alexander Jones
• 2022-09-14: Reserved by Alexander Jones
• 2011-01-01: Checked n = 500000 - 750000?, Free-DC Drive 3, suspended
• 2010-04-12: Found n = 626184, Brian Lody, Free-DC Drive 3
• 2009-12-27: Checked n = 10000 - 50000, Peter Benson
• 2009-10-19: Found n = 463376, Peter Benson
• 2009-08-08: Reserved by Free-DC Drive 3 from n = 500000
• 2008-01-19: Found n = 31265, Jean Penné, CRUS Liskovets-Gallot
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes