Riesel primes of the form 6211•2n-1

Current data

k , b : 6211 , 2 Count : 27 Nash : 1153 Max n : 600,000 Date : 2025-01-19

1, 7, 9, 25, 85, 127, 465, 601, 837, 1317, 1527, 2589, 2935, 3285, 5217, 5839, 8941, 10881, 14815, 34429, 37267, 62805, 80241, 80865, 160839, 192201, 398029

History

• 2025-01-19: Checked n = 10000 - 600000, Gary Barnes, double-check n = 10000 - 50000 & n = 400000 - 600000, released
• 2012-06-20: Checked n = 10000 - 50000, 400000 - 600000, David Metcalfe, from here
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes
• 2000-02-27: Found n = 37267, Dirk Augustin