Riesel primes of the form 103•2n-1

Current data

k , b : 103 , 2 Count : 38 Nash : 1373 Max n : 3,100,000 Date : 2024-04-18

3, 7, 11, 19, 63, 75, 95, 127, 155, 163, 171, 283, 563, 1739, 2243, 3971, 4375, 5227, 8307, 9943, 18383, 19835, 25879, 26927, 36895, 304771, 422939, 602483, 686251, 977951, 984667, 1077739, 1192775, 1486695, 1562619, 1860103, 2232551, 2462567

History

• 2024-04-18: Checked n = 2550000 - 2550223, Gary Barnes, 6 tests
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-11-12: Checked n = 3000000 - 3100000, RPS Megabit Drive 1
• 2018-04-11: Checked n = 2550223 - 3000000, RPS Megabit Drive 1
• 2014-08-12: Reserved by RPS Megabit Drive 1 from n = 2550223
• 2014-08-12: Checked to n = 2550000, Thomas Ritschel, released
• 2014-08-03: Found n = 2462567, Thomas Ritschel
• 2014-02-28: Checked n = 2250000 - 2350000, Thomas Ritschel
• 2013-10-01: Checked n = 2100000 - 2250000, Thomas Ritschel
• 2013-05-09: Found n = 2232551, Thomas Ritschel
• 2013-04-23: Checked n = 2000000 - 2100000, Thomas Ritschel
• 2012-12-28: Checked n = 1300000 - 2000000, Thomas Ritschel
• 2012-12-24: Found n = 1860103, Thomas Ritschel
• 2012-11-14: Found n = 1562619, Thomas Ritschel
• 2012-11-03: Found n = 1486695, Thomas Ritschel
• 2012-10-30: Checked n = 1100000 - 1300000, Thomas Ritschel
• 2012-10-11: Found n = 1192775, Thomas Ritschel
• 2012-10-09: Reserved by Thomas Ritschel
• 2012-10-09: none, Adam Sutton, released
• 2009-06-10: Checked n = 985000 - 1100000, Adam Sutton
• 2009-06-05: Found n = 1077739, Adam Sutton
• 2009-05-19: Checked n = 684000 - 985000, Adam Sutton
• 2009-05-17: Found n = 984667, Adam Sutton
• 2009-05-15: Found n = 977951, Adam Sutton
• 2008-03-01: Found n = 686251, Adam Sutton
• 2008-02-29: Checked n = 500000 - 684000, Adam Sutton
• 2008-01-10: Found n = 602483, Adam Sutton
• 2007-12-15: Reserved by Adam Sutton
• 2006-11-03: Checked n = 491000 - 500000, Steven Tjung, released
• 2006-10-04: Checked n = 475000 - 491000, Steven Tjung
• 2006-09-05: Checked n = 445000 - 475000, Steven Tjung
• 2006-08-09: Checked n = 356000 - 445000, Michael Curtis
• 2006-08-01: Found n = 422939, Steven Tjung
• 2006-06-30: Checked to n = 356000, Steven Tjung
• 2006-04-26: Reserved by Steven Tjung to n = 500000
• 2003-10-08: Found n = 304771, Raffi Chaglassian
• 1999-10-11: Found n = 36895, Tom Kuechler
• 1989: Found n = 9943, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown