Riesel primes of the form 21•2n-1

Reserved! This sequence is currently reserved by: Predrag Minovic

Current data

k , b : 21 , {{{Rb}}} Count : 43 Nash : 2103 Max n : 2,890,000 Date : 2015-03-01 Reserved : Predrag MinovicPredrag Minovic/Reserved

1, 2, 3, 7, 10, 13, 18, 27, 37, 51, 74, 157, 271, 458, 530, 891, 1723, 1793, 1849, 1986, 2191, 2869, 4993, 7777, 11730, 15313, 29171, 35899, 36227, 71570, 199219, 233914, 297499, 332523, 348547, 538657, 986130, 999599, 1170083, 1182083, 1452771, 1872923, 2160479

[[Category:Riesel {{{Rb}}}|#.....00021]][[Category:Riesel {{{Rb}}} Missing-range‎|#.....00021]]

History

• 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