Riesel primes of the form 283•2n-1

Current data

k , b : 283 , 2 Type : Low Count : 15 Nash : 597 Max n : 8,000,000 Date : 2022-04-10

11, 55, 91, 99, 235, 319, 1835, 16731, 25471, 31199, 123975, 149351, 1702599, 1879051, 6804731

History

• 2022-04-10: Checked to n = 8000000, Thomas Ritschel, released
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-06-22: Checked to n = 7000000, Thomas Ritschel
• 2020-01-19: Found n = 6804731, Thomas Ritschel
• 2019-12-17: Checked to n = 4000000, Thomas Ritschel
• 2019-04-29: Reserved by Thomas Ritschel for n ≥ 2000000
• 2015-02-13: Checked to n = 2000000, Thomas Ritschel, released
• 2015-02-13: Found n = 1879051, Thomas Ritschel
• 2015-01-31: Reserved by Thomas Ritschel for 1715000 < n < 2000000
• 2010-02-13: Checked to n = 1715000, Borys Jaworski, released
• 2010-02-09: Found n = 1702599, Borys Jaworski
• 2010-01-31: Checked to n = 1680000, Borys Jaworski
• 2009-12-31: Checked to n = 1610000, Borys Jaworski
• 2009-12-01: Checked to n = 1550000, Borys Jaworski
• 2009-10-31: Checked to n = 1470000, Borys Jaworski
• 2009-09-30: Checked to n = 1370000, Borys Jaworski
• 2009-08-31: Checked to n = 1300000, Borys Jaworski
• 2009-07-31: Checked to n = 1280000, Borys Jaworski
• 2009-06-30: Checked to n = 1250000, Borys Jaworski
• 2009-05-31: Checked to n = 1230000, Borys Jaworski
• 2009-04-30: Checked to n = 1210000, Borys Jaworski
• 2009-03-27: Checked to n = 1190000, Borys Jaworski
• 2009-02-26: Checked to n = 1170000, Borys Jaworski
• 2009-01-29: Checked to n = 1140000, Borys Jaworski
• 2009-01-09: Checked to n = 1130000, Borys Jaworski
• 2008-07-06: Checked to n = 920000, Borys Jaworski
• 2008-03-01: Checked to n = 740000, Borys Jaworski
• 2008-02-09: Checked to n = 700000, Borys Jaworski
• 2008-02-03: Checked to n = 690000, Borys Jaworski
• 2008-01-12: Checked to n = 650000, Borys Jaworski
• 2008-01-06: Checked to n = 640000, Borys Jaworski
• 2007-10-01: Reserved by Borys Jaworski
• 2006-12-16: Checked to n = 600000, RPS Drive 4, released
• 2006-07-28: Reserved by RPS Drive 4, for n = 260000 - 600000
• 2004-02-05: Found n = 149351, Steven Harvey
• 2003-05-29: Found n = 123975, Steven Harvey
• 1999-07-11: Found n = 31199, Tom Kuechler