Riesel primes of the form 2177•2n-1

Current data

k , b : 2177 , 2 Count : 35 Nash : 1601 Max n : 1,025,000 Date : 2011-11-07

2, 10, 22, 30, 86, 122, 140, 142, 234, 246, 406, 586, 634, 668, 730, 822, 1046, 1052, 1300, 1348, 2276, 3166, 3886, 3906, 10890, 11748, 15370, 26076, 38266, 126750, 161170, 174972, 364734, 371550, 503892

History

• 2015-05-18: Checked n = 600000-700000, Karsten Bonath
• 2013-08-30: Checked to n = 1025000, RPS Drive 11, released
• 2012-02-18: Checked to n = 425000, NPLB Drive 12C, released
• 2012-01-03: Checked to n = 350000, NPLB Drive 12B, released
• 2011-12-31: Reserved by NPLB Drive 12C, for 350001 ≤ n ≤ 425000
• 2011-09-03: Reserved by RPS Drive 11, for 666666 < n < 1025000
• 2010-11-19: Checked to n = 600000, NPLB Drive 11, released
• 2010-03-26: Reserved by NPLB Drive 12B, for 250001 ≤ n ≤ 350000
• 2010-01-05: Checked to n = 250000, NPLB Drive 12A, released
• 2009-11-06: 503892 confirmed, Vaughan Davies, NPLB Drive 11
• 2009-08-14: Reserved by NPLB Drive 12A, for 50001 ≤ n ≤ 250000
• 2009-06-22: Reserved by NPLB Drive 11, for 425001 ≤ n ≤ 600000
• 2008-01-02: Found n = 503892, David Metcalfe, Riesel Prime Search
• 2007-05-30: Found n = 371550, David Metcalfe, Riesel Prime Search
• 2007-05-30: Found n = 364734, David Metcalfe, Riesel Prime Search