Riesel primes of the form 7911•2n-1

Current data

k , b : 7911 , 2 Type : 3 Count : 33 Nash : 1819 Max n : 800,000 Date : 2025-01-11

2, 11, 14, 23, 41, 50, 53, 113, 154, 185, 794, 1061, 2170, 3931, 13082, 15823, 21575, 22523, 24407, 39706, 55370, 68734, 104086, 115877, 130034, 168290, 183647, 195173, 312946, 387497, 389743, 726161, 745601

History

• 2025-01-11: Checked n = 25000 - 800000, Gary Barnes, double-check n = 25000 - 50000 & n = 500000 - 750000, released
• 2011-01-01: Checked n = 500000 - 750000?, Free-DC Drive 3, suspended
• 2010-12-20: Found n = 745601, Brian Lody, Free-DC Drive 3
• 2010-10-15: Found n = 726161, Brian Lody, Free-DC Drive 3
• 2009-12-27: Checked n = 10000 - 50000, Peter Benson
• 2009-08-08: Reserved by Free-DC Drive 3 from n = 500000
• 2007-07-06: Checked n = 1 - 25000, Gary Barnes
• 1987: Found n = 15823, Wilfrid Keller