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Riesel primes of the form 21•2n-1
Current data
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Remarks : |
The sequence A002238 in OEIS |
Notes
History
- 2021-07-24: Checked to n = 3500000, Gary Barnes, released, double-check for n=1000000-2890000, results included
- 2021-06-27: Found n = 2959789, Gary Barnes
- 2021-05-10: Reserved by Gary Barnes
- 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
- 2015-03-01: Checked to n = 2890000, Predrag Minovic
- 2014-10-05: Checked to n = 2865000, Predrag Minovic
- 2013-09-08: Checked to n = 2500000, Predrag Minovic
- 2013-07-09: Checked to n = 2450000, Predrag Minovic
- 2013-01-04: Checked to n = 2220000, Predrag Minovic
- 2012-11-06: Found n = 2160479, Predrag Minovic
- 2012-07-02: Checked to n = 2040000, Predrag Minovic
- 2012-05-04: Checked to n = 1945000, Predrag Minovic
- 2012-03-04: Checked to n = 1910000, Predrag Minovic
- 2012-01-11: Found n = 1872923, Predrag Minovic
- 2011-12-31: Checked to n = 1860000, Predrag Minovic
- 2011-06-04: Checked to n = 1750000, Predrag Minovic
- 2011-04-12: Checked to n = 1590000, Predrag Minovic
- 2011-03-05: Checked to n = 1575000, Predrag Minovic
- 2011-01-13: Checked to n = 1525000, Predrag Minovic
- 2010-10-31: Checked to n = 1500000, Predrag Minovic
- 2010-09-05: Checked to n = 1470000, Predrag Minovic
- 2010-07-18: Checked to n = 1400000, Predrag Minovic
- 2010-05-04: Checked to n = 1320000, Predrag Minovic
- 2010-04-11: Checked to n = 1290000, Predrag Minovic
- 2010-02-11: Checked to n = 1230000, Predrag Minovic
- 2009-08-29: Checked to n = 1200000, Predrag Minovic
- 2009-08-09: Checked to n = 1185000, Predrag Minovic
- 2009-08-02: Found n = 1182083, Predrag Minovic
- 2009-05-31: Checked to n = 1090000, Predrag Minovic
- 2009-02-13: Checked to n = 1075000, Predrag Minovic
- 2008-04-06: Found n = 1452771, Peter Benson
- 2008-03-16: Found n = 1170083, Peter Benson
- 2005-07-14: Found n = 986130, Predrag Minovic
- 2005-03-21: Found n = 999599, Predrag Minovic
- 2004-08-11: Found n = 538657, Predrag Minovic
- 2004-05-07: Found n = 348547, Steven Harvey
- 2004-05-05: Found n = 332523, Steven Harvey
- 2004-04-30: Found n = 297499, Steven Harvey
- 2004-04-17: Found n = 233914, Steven Harvey
- 2004-04-03: Found n = 199219, Steven Harvey
- 1999-07-04: Found n = 71570, Michael J. Graef
- 1999-05-29: Found n = 36227, Michael J. Graef
- 1999-05-29: Found n = 35899, Michael J. Graef
- 1998-08-11: Found n = 29171, Wilfrid Keller
- 1994: Found n = 7777, Harvey Dubner