Riesel primes of the form 351•2n-1

Current data

k , b : 351 , 2  (sieve) Type : 3 Count : 31 Nash : 1851 Max n : 2,000,000 Date : 2020-04-23

1, 7, 11, 22, 73, 113, 137, 143, 361, 581, 1426, 2293, 3013, 3659, 5521, 5761, 7343, 7987, 9551, 14422, 23450, 34298, 52370, 234043, 283706, 334709, 462287, 590579, 825586, 985817, 1947281

Remarks :

Sieve file: n=2M-3M, 32213 candidates

History

• 2014-12-28: Checked to n = 2000000, NPLB Maxi Drive 1, released
• 2014-12-05: Found n = 1947281, Lennart Vogel
• 2014-08-20: Reserved by NPLB Maxi Drive 1, for 1610000<n<2000000
• 2013-04-28: Reserved by NPLB Maxi Drive 1, for 1300000<n<2000000
• 2013-01-14: Reserved by NPLB Maxi Drive 1, for 1000000<n<1300000
• 2009-09-30: Checked to n = 1000000, NPLB Mini Drive 4, released
• 2009-09-25: Found n = 985817, Karsten Bonath
• 2009-08-12: Reserved by NPLB Mini Drive 4, for 900000<n<1000000
• 2009-08-03: Found n = 825586, Vaughan Davies
• 2009-06-18: Reserved by NPLB Mini Drive 4, for 800000<n<900000
• 2009-05-29: Reserved by NPLB Mini Drive 4, for 700000<n<800000
• 2009-05-11: Checked to n = 700000, Gary Barnes, released
• 2009-05-09: Checked to n = 695000, Gary Barnes
• 2009-05-05: Checked to n = 680000, Gary Barnes
• 2009-05-01: Checked to n = 668000, Gary Barnes
• 2009-04-27: Checked to n = 640000, Gary Barnes
• 2009-04-15: Reserved by Gary Barnes, for 620000<n<700000
• 2009-04-13: Checked to n = 620000, Karsten Bonath, released
• 2009-03-15: Reserved by Karsten Bonath, for 600000<n<620000
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-11-09: Found n = 590579, Lennart Vogel
• 2008-04-19: Found n = 462287, Gary Barnes
• 2008-03-06: Found n = 283706, James P. Burt
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2007-12-23: Found n = 334709, Karsten Bonath
• 2005-09-15: Found n = 234043, Steven Harvey
• 1998-11-01: Found n = 23450, Gerben Dirksen