Riesel primes of the form 7245•2n-1

Current data

k , b : 7245 , 2 Type : 315 Count : 91 Nash : 4608 Max n : 1,333,000 Date : 2025-05-05

1, 2, 5, 6, 12, 14, 15, 17, 18, 28, 38, 44, 45, 69, 102, 107, 147, 196, 215, 227, 245, 248, 278, 301, 357, 395, 419, 426, 476, 527, 539, 549, 561, 627, 660, 818, 1088, 1584, 1880, 2520, 2910, 3695, 3794, 4261, 4374, 5599, 7557, 8101, 9530, 9698, 11372, 13940, 14276, 17861, 18179, 19127, 25599, 29097, 30379, 32702, 34065, 36311, 51796, 55475, 65424, 67675, 83017, 83611, 87737, 130409, 190935, 199097, 211437, 226796, 250767, 299755, 312261, 338246, 410486, 412475, 520742, 566594, 618242, 734036, 788010, 808105, 880345, 882745, 994567, 1109076, 1248284

History

• 2025-05-05: Checked n = 10000 - 380000, Gary Barnes, double-check n = 10000 - 50000, released
• 2024-04-10: Checked n = 380000 - 1333000, RPS Drive 8, released
• 2014-04-28: Found n = 1248284, Predrag Minovic, RPS Drive 8
• 2013-08-24: Found n = 1109076, Lennart Vogel, RPS Drive 8
• 2011-08-31: Found n = 994567, Peter Benson, RPS Drive 8
• 2011-02-07: Found n = 880345, Predrag Minovic, RPS Drive 8
• 2011-02-01: Found n = 882745, Peter Benson, RPS Drive 8
• 2010-11-26: Found n = 808105, Peter Benson, RPS Drive 8
• 2010-10-24: Found n = 788010, Peter Benson, RPS Drive 8
• 2010-08-28: Found n = 734036, Peter Benson, RPS Drive 8
• 2009-08-21: Found n = 618242, Peter Benson, RPS Drive 8
• 2009-07-22: Found n = 566594, David Metcalfe, RPS Drive 8
• 2009-05-25: Found n = 520742, David Metcalfe, RPS Drive 8
• 2009-04-04: Found n = 412475, Adam Sutton, RPS Drive 8
• 2009-04-03: Found n = 410486, Predrag Minovic, RPS Drive 8
• 2009-03-24: Reserved by RPS Drive 8, for n = 380000 - 700000
• 2009-12-27: Checked n = 10000 - 50000, Peter Benson
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes
• 1989: Found n = 7557, John Brown, Landon Curt Noll, Bodo Parady, Gene Smith, Joel Smith, Sergio Zarantonello