Riesel primes of the form 19401•4n-1

Current data

k , b : 19401 , 4 Count : 1 Nash : 548 Max n : 1,543,225 Date : 2015-06-13

1543225

Remarks :

CRUS Liskovets-Gallot search for Riesel 19401•2n-1 even n.

History

• 2015-06-13: Found n = 1543225, Gary Barnes, CRUS Liskovets-Gallot
• 2015-04-29: Checked to n = 1500000, (PRPnet port 1400), Conjectures 'R Us
• 2014-09-20: Reserved by (PRPnet port 1400), Conjectures 'R Us, for n>1000000
• 2011-08-10: Checked to n = 1000000, (PRPnet port 1300), Conjectures 'R Us, released
• 2011-05-13: Checked to n = 700000, (PRPnet port 1300), Conjectures 'R Us
• 2011-02-07: Reserved by (PRPnet port 1300), Conjectures 'R Us
• 2011-02-02: Checked to n = 600000, Karsten Bonath, released
• 2010-06-27: Checked to n = 600000, Karsten Bonath
• 2010-03-28: Checked to n = 568000, Karsten Bonath
• 2009-04-10: Checked to n = 563000, Karsten Bonath
• 2008-12-11: Checked to n = 482000, Karsten Bonath
• 2008-09-09: Checked to n = 222000, Karsten Bonath
• 2008-06-15: Checked to n = 218500, Karsten Bonath
• 2008-05-04: Checked to n = 192500, Karsten Bonath
• 2008-04-05: Checked to n = 189500, Karsten Bonath
• 2008-02-14: Checked to n = 150000, Karsten Bonath
• 2008-01-10: Reserved by Karsten Bonath
• 2008-01-10: Checked to n = 131289, Jean Penné, released
• 2007-12-19: Reserved by Jean Penné