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Riesel primes of the form 15•2n-1
Current data
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Remarks : |
The sequence A002237 in OEIS |
Notes
- ↑ Sophie Germain n=1, Twin n=1
- ↑ Twin n=2
- ↑ Sophie Germain n=4, Twin n=4
- ↑ Twin n=10
- ↑ Near Woodall 15•214-1
- ↑ Woodall, Woodall 30•230-1
History
- 2021-11-22: Checked to n = 6134000, RPS K15 Drive
- 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
- 2021-01-27: Checked to n = 5800000, RPS K15 Drive
- 2018-04-11: Checked to n = 5500000, RPS K15 Drive
- 2013-10-15: Found n = 3668194, Ivica Kelava, RPS K15 Drive
- 2011-07-11: Found n = 2323205, Thomas Ritschel, RPS K15 Drive
- 2010-01-03: Checked to n = 1908000, RPS K15 Drive
- 2009-02-13: Checked to n = 1880000, RPS K15 Drive
- 2008-12-16: Found n = 1837873, Even Stokkedalen, RPS K15 Drive
- 2007-01-05: Found n = 1344313, David Metcalfe, RPS K15 Drive
- 2006-09-28: Found n = 1084010, David Metcalfe, RPS K15 Drive
- 2006-09-12: Reserved by RPS K15 Drive for 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 to n = 620000, Robert Smith
- 2005-02-27: Found n = 568780, Robert Smith
- 2004-09-06: Checked to n = 505000, Robert Smith
- 2004-06-03: Checked to n = 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