Riesel primes of the form 21825•2n-1

Current data

k , b : 21825 , 2 Type : 315 Count : 92 Nash : 4481 Max n : 1,000,000 Date : 2021-07-20

1, 2, 3, 4, 8, 9, 11, 12, 14, 18, 21, 26, 28, 32, 44, 47, 54, 82, 94, 97, 99, 107, 117, 151, 181, 241, 256, 294, 314, 324, 338, 356, 491, 527, 659, 694, 743, 783, 856, 919, 1106, 1188, 1446, 1636, 2036, 2061, 2296, 2367, 2727, 3782, 3999, 5247, 5318, 5329, 8451, 8503, 9019, 10954, 11243, 12961, 14301, 25024, 28428, 32591, 41563, 46016, 51683, 59818, 66399, 69994, 70576, 73067, 116416, 126594, 161928, 164754, 166294, 170386, 193892, 220594, 233842, 262456, 371346, 376766, 384496, 447542, 470138, 659361, 711511, 733583, 832142, 912659

History

• 2021-07-20: Checked to n = 400000, Alexander Jones, released
• 2021-06-01: Checked to n = 375000, Alexander Jones
• 2021-01-13: Checked to n = 350000, Alexander Jones
• 2020-10-01: Checked to n = 325000, Alexander Jones
• 2020-06-17: Checked to n = 300000, Alexander Jones
• 2020-03-17: Reserved by Alexander Jones
• 2018-06-23: Checked n = 400000  -  1000000, RPS Drive 9, released
• 2011-11-23: Checked to n = 1007, Gary Barnes
• 2011-02-13: Found n = 912659, Peter Benson, RPS Drive 9
• 2010-11-11: Found n = 832142, Peter Benson, RPS Drive 9
• 2010-08-30: Found n = 733583, Peter Benson, RPS Drive 9
• 2010-08-09: Found n = 711511, David Metcalfe, RPS Drive 9
• 2010-06-21: Found n = 659361, David Metcalfe, RPS Drive 9
• 2009-06-07: Found n = 470138, David Metcalfe, RPS Drive 9
• 2009-05-22: Found n = 447542, James P. Burt, RPS Drive 9
• 2009-05-12: Reserved by RPS Drive 9 for n > 400000
• 2008-07-23: Checked to n = 50, David Harrison