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Riesel primes of the form 75•2n-1
Current data
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Notes
- ↑ Twin n=1
- ↑ Twin n=3
- ↑ Sophie Germain n=5
- ↑ Twin n=6
- ↑ Sophie Germain n=18
- ↑ Sophie Germain n=19
- ↑ Sophie Germain n=28
- ↑ Twin n=43
- ↑ Woodall 75•275-1
- ↑ Woodall 150•8192150-1
History
- 2024-09-03: Found n = 3271125, Serge Batalov
- 2024-08-30: Found n = 3006235, Serge Batalov
- 2024-05-07: Reservation dropped, William Byerly
- 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
- 2017-07-27: Reserved by William Byerly
- 2013-10-01: Checked to n = 3000000, Larry Soule, released
- 2011-10-26: Checked to n = 3000000, Larry Soule
- 2011-09-03: Found n = 2562382, Larry Soule
- 2011-08-25: Checked to n = 2300000, Larry Soule
- 2011-07-25: Found n = 2130432, Larry Soule
- 2011-07-18: Found n = 2050637, Larry Soule
- 2011-07-11: Checked to n = 2000000, Larry Soule
- 2011-05-17: Checked to n = 1800000, Larry Soule
- 2011-04-21: Reserved by Larry Soule from n=1659823
- 2011-04-12: Checked to n = 1659823, Larry Soule
- 2011-03-15: Reserved by Larry Soule from n=1160000
- 2010-12-04: Checked to n = 1160000, Carlos Eduardo Pinho, released
- 2010-12-01: Reserved by Carlos Eduardo Pinho from n=1150000
- 2010-11-28: none, Carlos Eduardo Pinho, released
- 2010-11-23: Reserved by Carlos Eduardo Pinho
- 2010-04-13: Checked to n = 1150000, Predrag Minovic
- 2009-07-30: Reserved by Borys Jaworski for sieving only n=1500000-5000000
- 2008-01-29: Found n = 995721, Thomas Ritschel
- 2008-01-07: Checked to n = 850000, Thomas Ritschel
- 2007-11-28: Found n = 631091, Thomas Ritschel
- 2007-07-10: Found n = 814857, Peter Benson
- 2005-03-07: Found n = 434323, Thomas Ritschel
- 2005-03-07: Found n = 424392, Thomas Ritschel
- 2005-03-07: Found n = 306789, Thomas Ritschel
- 2004-06-12: Found n = 231580, Patrick Keller
- 2004-06-08: Found n = 199819, Patrick Keller
- 2004-06-07: Found n = 196071, Patrick Keller
- 2004-06-07: Found n = 182433, Patrick Keller
- 2004-06-06: Found n = 170933, Patrick Keller
- 1994: Found n = 6807, Harvey Dubner
- 1989: Found n = 24658, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown
- 1989: Found n = 21945, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown