Riesel primes of the form 103•2n-1

Reserved! This sequence is currently part of Multi Reservation 4: RPS Megabit Drive 1.

Current data

k , b : 103 , 2 Count : 38 Nash : 1373 Max n : 3,100,000 Date : 2020-11-12 Reserved : Riesel Prime SearchRiesel Prime Search/Reserved

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
• 2018-04-11: Checked to n = 3000000, RPS Megabit Drive 1
• 2014-08-12: Reserved by RPS Megabit Drive 1 for n ≥ 2550223
• 2014-08-12: Checked to n = 2550000, Thomas Ritschel, released
• 2014-08-03: Found n = 2462567, Thomas Ritschel
• 2014-02-28: Checked to n = 2350000, Thomas Ritschel
• 2013-10-01: Checked to n = 2250000, Thomas Ritschel
• 2013-05-09: Found n = 2232551, Thomas Ritschel
• 2013-04-23: Checked to n = 2100000, Thomas Ritschel
• 2012-12-28: Checked to n = 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 to n = 1300000, Thomas Ritschel
• 2012-10-11: Found n = 1192775, Thomas Ritschel
• 2012-10-09: Reserved by Thomas Ritschel
• 2012-10-09: Checked to n = 1100000, Adam Sutton, released
• 2009-06-10: Checked to n = 1100000, Adam Sutton
• 2009-06-05: Found n = 1077739, Adam Sutton
• 2009-05-19: Checked to n = 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 to n = 684000, Adam Sutton
• 2008-01-10: Found n = 602483, Adam Sutton
• 2007-12-15: Reserved by Adam Sutton
• 2006-11-03: Checked to n = 500000, Steven Tjung, released
• 2006-10-04: Checked to n = 491000, Steven Tjung
• 2006-09-05: Checked to n = 475000, Steven Tjung
• 2006-08-09: Checked to n = 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
• 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