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Riesel primes of the form 243•2n-1
Current data
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Notes
History
- 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
- 2014-03-14: Checked n = 2000000 - 3100000, Serge Batalov, released
- 2014-03-07: Found n = 2147387, Serge Batalov
- 2014-03-06: Reserved by Serge Batalov for n = 2000000 - 3100000
- 2013-10-01: Reservation dropped, Larry Soule
- 2011-08-25: Checked n = 1300000 - 2000000, Larry Soule
- 2011-08-22: Found n = 1923567, Larry Soule
- 2011-08-15: Found n = 1777467, Larry Soule
- 2011-08-08: Found n = 1368212, Larry Soule
- 2011-07-25: Found n = 1431443, Larry Soule
- 2011-07-12: Reserved by Larry Soule from n = 1300000
- 2011-05-15: Checked n = 1150000 - 1300000, James P. Burt, released, results included
- 2011-04-29: Reserved by James P. Burt
- 2008-02-28: Checked n = 1140000 - 1150000, Rob Binnekamp, released
- 2008-02-11: Checked n = 1000000 - 1140000, Rob Binnekamp
- 2007-12-18: Checked n = 685900 - 800000, Gary Barnes, double-check n = 685900 - 745000, released
- 2007-12-01: Checked n = 642000 - 685900, Gary Barnes, double-check n = 650000 - 685900
- 2007-11-17: Checked n = 472600 - 642000, Gary Barnes
- 2007-11-12: Found n = 616662, Gary Barnes
- 2007-11-10: Checked n = 230000 - 260000, 300000 - 472600, Gary Barnes, double-check n = 230000 - 260000 & n = 300000 - 400000
- 2007-11-07: Found n = 539016, Gary Barnes
- 2007-11-03: Found n = 518736, Gary Barnes
- 2007-11-02: Found n = 510491, Gary Barnes
- 2007-10-29: Reserved by Gary Barnes for n = 230000 - 260000 & n = 300000 - 800000, partial double-check
- 2007-07-30: Checked n = 289944 - 300000, Valerie Vonck, released
- 2007-07-28: Checked n = 260000 - 289944, Valerie Vonck
- 2007-07-01: Reserved by Valerie Vonck for n = 260000 - 300000
- 2006-09-16: Checked n = 300000 - 400000, 650000 - 745000, 800000 - 1000000, Rob Binnekamp
- 2006-06-10: Checked n = 230000 - 260000, Predrag Minovic
- 2005-01-14: Found n = 744442, Rob Binnekamp
- 2005-01-13: None, Steven Harvey, released
- 2004-12-24: Checked n = 219000 - 230000, Steven Harvey
- 2004-12-09: Found n = 670891, Rob Binnekamp
- 2004-11-05: Checked n = 200000 - 219000, Steven Harvey
- 2004-11-04: Found n = 206302, Steven Harvey
- 2004-10-21: Found n = 387836, Rob Binnekamp
- 2004-05-14: Checked n = 182000 - 200000, Harsh Aggarwal, released
- 2004-05-14: Found n = 187966, Harsh Aggarwal
- 2004-05-11: Checked n = 175000 - 182000, Harsh Aggarwal
- 2004-05-10: Checked n = 1 - 175000, Harsh Aggarwal
- 2004-04-09: Reserved by Harsh Aggarwal
- 2004-03-05: Found n = 152454, Thomas Masser
- 1999-11-27: Found n = 41467, Dale Andrews
- 1999-11-27: Found n = 40174, Dale Andrews
- 1989: Found n = 13482, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown
- 1989: Found n = 7434, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown