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Riesel primes of the form 15•2n-1
Current data
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Remarks : |
The sequence A002237 in OEIS See also Williams 15•16n-1 |
Notes
- ↑ S.G. n=1, Twin n=1
- ↑ Twin n=2
- ↑ S.G. n=4, Twin n=4, Williams 15•161-1
- ↑ Twin n=10
- ↑ Near Woodall 15•214-1
- ↑ Woodall, Woodall 30•230-1
- ↑ Williams 15•1620-1
- ↑ Williams 15•1629-1
- ↑ Williams 15•1643-1
- ↑ Williams 15•1656-1
- ↑ Williams 15•16251-1
- ↑ Williams 15•1625985-1
- ↑ Williams 15•1627031-1
- ↑ Williams 15•16142195-1
- ↑ Williams 15•16164066-1
History
- 2024-09-02: Checked n = 8 - 400000 only n ≡ 0 mod 4, Mark Rodenkirch, double-check, released
- 2024-08-22: Reserved by Mark Rodenkirch for n = 8 - 400000 only n ≡ 0 mod 4, double-check
- 2024-08-14: Found n = 9482269, Ryan Propper
- 2024-06-13: Checked n = 6000000 - 7000000, Ryan Propper
- 2021-11-20: Checked n = 1908000 - 1967597, 2062945 - 6134000, RPS Drive K15, released
- 2021-10-08: Found n = 6429089, Ryan Propper
- 2021-08-25: Found n = 6993631, Ryan Propper
- 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
- 2013-10-15: Found n = 3668194, Ivica Kelava, RPS Drive K15
- 2011-07-11: Found n = 2323205, Thomas Ritschel, RPS Drive K15
- 2010-01-03: Checked n = 1880000 - 1908000, RPS Drive K15
- 2009-02-13: Checked n = 1000000 - 1880000, RPS Drive K15
- 2009-01-09: Checked n = 1967597 - 2062945, Peter Benson
- 2009-01-09: Checked n = 950000 - 1045993, 1140017 - 1196900, Peter Benson ( n = 1000000 - 1045993 & n = 1140017 - 1196900 also done by RPS Drive K15 )
- 2008-12-16: Found n = 1837873, Even Stokkedalen, RPS Drive K15
- 2007-01-05: Found n = 1344313, David Metcalfe, RPS Drive K15
- 2006-09-28: Found n = 1084010, David Metcalfe, RPS Drive K15
- 2006-09-12: Reserved by RPS Drive K15 from n = 1000000
- 2006-03-02: Found n = 902474, Robert Smith
- 2005-08-12: Found n = 712294, Robert Smith
- 2005-05-17: Found n = 656264, Robert Smith
- 2005-03-29: Checked n = 505000 - 620000, Robert Smith
- 2005-02-27: Found n = 568780, Robert Smith
- 2004-09-06: Checked n = 475000 - 505000, Robert Smith
- 2004-06-03: Checked n = 340000 - 475000, Robert Smith
- 2004-05-13: Found n = 454681, Robert Smith
- 2004-04-15: Checked to n = 340000, Robert Smith
- 2004-03-30: Found n = 172714, Robert Smith
- 2004-03-30: Found n = 161453, Robert Smith
- 2003-04-07: Found n = 115327, Steven Harvey
- 1999-08-09: Found n = 91457, Michael J. Graef
- 1999-07-08: Found n = 83669, Michael J. Graef
- 1999-07-07: Found n = 83263, Michael J. Graef
- 1999-06-29: Found n = 60622, Michael J. Graef
- 1999-06-03: Found n = 41054, Michael J. Graef
- 1999-06-03: Found n = 40742, Michael J. Graef
- 1998-08-09: Found n = 21962, Wilfrid Keller
- 1998-08-08: Found n = 21727, Wilfrid Keller
- 1994: Found n = 7613, Harvey Dubner