Riesel primes of the form 205•2n-1

Reserved! This sequence is currently part of Multi Reservation 6: CRUS Liskovets-Gallot.

Current data

k , b : 205 , 2 Count : 39 Nash : 1351 Max n : 5,000,000 Date : 2022-03-04 Reserved : Conjectures 'R UsConjectures 'R Us/Reserved

1, 9, 39, 45, 49, 67, 75, 99, 129, 159, 177, 445, 721, 771, 829, 849, 865, 1971, 3045, 8397, 9019, 10749, 21037, 30529, 38349, 46257, 53577, 64695, 77451, 128019, 420297, 462261, 749859, 756705, 1019679, 1275889, 1300401, 1537779, 1666435

History

• 2014-06-03: Found n = 1666435, Serge Batalov, RPS 3rd Megabit Drive
• 2014-06-02: Found n = 1537779, Serge Batalov, RPS 3rd Megabit Drive
• 2014-05-30: Reserved by RPS 3rd Megabit Drive for n > 1400000
• 2011-02-01: Checked to n = 1400000, RPS Drive 6, released
• 2010-11-19: Found n = 1300401, Carlos Eduardo Pinho, RPS Drive 6
• 2010-11-11: Found n = 1275889, Carlos Eduardo Pinho, RPS Drive 6
• 2008-11-27: Found n = 1019679, Even Stokkedalen, RPS Drive 6
• 2008-08-11: Found n = 756705, David Metcalfe, RPS Drive 6
• 2008-08-11: Found n = 749859, David Metcalfe, RPS Drive 6
• 2008-06-22: Reserved by RPS Drive 6, for n > 600000
• 2006-12-16: Checked to n = 600000, RPS Drive 4, released
• 2006-09-01: Found n = 462261, David Metcalfe, RPS Drive 4
• 2006-08-24: Found n = 420297, J. Craig Brunson, RPS Drive 4
• 2006-07-28: Reserved by RPS Drive 4, for n = 260000 - 600000