Riesel primes of the form 9•2n-1

Reserved! This sequence is currently reserved by: Dmitry Domanov

Current data

k , b : 9 , 2 Type : 3 Count : 47 Nash : 1674 Max n : 6,500,000 Date : 2021-03-21 Reserved : Dmitry DomanovDmitry Domanov/Reserved

1, 3, 7, 13, 15, 21, 43, 63, 99, 109, 159, 211, 309, 343, 415, 469, 781, 871, 939, 1551, 3115, 3349, 5589, 5815, 5893, 7939, 8007, 11547, 12495, 22555, 23647, 35647, 83415, 103059, 184999, 275859, 384243, 484975, 503893, 828709, 1010277, 1419855, 1481821, 2060941, 3259381, 4005979, 4683555

Remarks :

The sequence A002236 in OEIS

History

• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-10-29: Checked to n = 6500000, Dmitry Domanov
• 2020-08-23: Checked to n = 6350000, Dmitry Domanov
• 2020-03-11: Checked to n = 6000000, Dmitry Domanov
• 2015-11-03: Checked to n = 6000000, Dmitry Domanov
• 2015-05-06: Checked to n = 5700000, Dmitry Domanov
• 2014-12-24: Checked to n = 5220000, Dmitry Domanov
• 2014-09-29: Reserved by Dmitry Domanov for n=5000000-6000000
• 2013-01-07: Checked to n = 5000000, Peter Benson
• 2012-12-24: Found n = 4683555, Peter Benson
• 2012-11-17: Found n = 4005979, Peter Benson
• 2012-11-17: Reserved by Peter Benson from n=4000000
• 2012-03-17: Checked to n = 4000000, Peter Benson
• 2011-11-27: Found n = 3259381, Peter Benson
• 2011-11-01: Reserved by Peter Benson from n=3000000
• 2011-06-02: Checked to n = 3000000, Peter Benson
• 2011-04-05: Reserved by Peter Benson
• 2010-12-23: Checked to n = 2106000, Predrag Minovic
• 2010-10-31: Checked to n = 1840000, Predrag Minovic
• 2010-09-05: Checked to n = 1814000, Predrag Minovic
• 2010-07-18: Checked to n = 1610000, Predrag Minovic
• 2010-06-05: Checked to n = 1570000, Predrag Minovic
• 2010-04-11: Checked to n = 1540000, Predrag Minovic
• 2010-02-11: Checked to n = 1530000, Predrag Minovic
• 2009-12-05: Checked to n = 1520000, Predrag Minovic
• 2009-11-24: Found n = 1419855, Predrag Minovic
• 2009-11-20: Checked to n = 1415000, Predrag Minovic
• 2009-11-03: Checked to n = 1414000, Predrag Minovic
• 2009-01-10: Checked n = 1330000 - 1430000, Adam Sutton
• 2008-08-27: Found n = 2060941, Peter Benson
• 2008-04-12: Found n = 1481821, Peter Benson
• 2008-02-29: Checked to n = 1200000, Adam Sutton, n=850000-1200000 done
• 2008-02-01: Reserved by Adam Sutton
• 2007-12-30: Checked to n = 800000, Jeffrey Sax
• 2007-11-15: Found n = 1010277, Peter Benson
• 2005-02-03: Found n = 828709, Jeffrey Sax
• 2004-07-24: Found n = 503893, Jeffrey Sax
• 2004-07-14: Found n = 484975, Jeffrey Sax
• 2004-06-13: Found n = 384243, Jeffrey Sax
• 2004-05-23: Found n = 275859, Jeffrey Sax
• 2000-04-03: Found n = 184999, Ingo Buechel, Wilfrid Keller
• 1999-02-14: Found n = 103059, Ingo Buechel, Wilfrid Keller
• 1999-01-15: Found n = 83415, Ingo Buechel, Wilfrid Keller
• 1998-06-16: Found n = 23647, Wilfrid Keller
• 1998-06-16: Found n = 22555, Wilfrid Keller
• 1989: Found n = 35647, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown
• 1981: Found n = 12495, Hans Riesel, Anders Björn
• 1980: Found n = 8007, Jurgen Buhl, Walter Borho
• 1980: Found n = 7939, Jurgen Buhl, Walter Borho
• 1980: Found n = 5893, Jurgen Buhl, Walter Borho
• 1980: Found n = 5815, Jurgen Buhl, Walter Borho
• 1980: Found n = 5589, Jurgen Buhl, Walter Borho
• 1980: Found n = 3349, Jurgen Buhl, Walter Borho
• 1979: Found n = 11547, Jurgen Buhl, Walter Borho