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

• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2014-06-03: Found n = 1666435, Serge Batalov, RPS Megabit Drive 3
• 2014-06-02: Found n = 1537779, Serge Batalov, RPS Megabit Drive 3
• 2014-05-30: Reserved by RPS Megabit Drive 3 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 = 250000 - 600000