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Difference between revisions of "Riesel prime 2 15"
m (Karbon moved page Riesel prime 15 to Riesel prime 2 15 without leaving a redirect: renamed) |
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{{Riesel prime | {{Riesel prime | ||
|Rk=15 | |Rk=15 | ||
+ | |Rb=2 | ||
|RCount=55 | |RCount=55 | ||
|RNash=2221 | |RNash=2221 | ||
Line 65: | Line 66: | ||
}} | }} | ||
==History== | ==History== | ||
− | {{HistC|2021-01-27|5800000|Thomas Ritschel, RPS Drive k15|570252}} | + | {{HistC|2021-01-27|5800000|Thomas Ritschel,RPS Drive k15|570252}} |
− | {{HistC|2018-04-11|5500000|RPS Drive k15}} | + | {{HistC|2018-04-11|5500000|RPS Drive k15}} |
{{HistF|2013-10-15|3668194|Ivica Kelava|356337}} | {{HistF|2013-10-15|3668194|Ivica Kelava|356337}} | ||
{{HistF|2011-07-11|2323205|Thomas Ritschel|266073}} | {{HistF|2011-07-11|2323205|Thomas Ritschel|266073}} |
Revision as of 08:51, 15 July 2021
Reserved! This sequence is currently reserved by: Riesel Prime Search |
Current data
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Remarks : |
Forum thread at MersenneForum 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
- 2021-01-27: Checked to n = 5800000, Thomas Ritschel, RPS Drive k15
- 2018-04-11: Checked to n = 5500000, RPS Drive k15
- 2013-10-15: Found n = 3668194, Ivica Kelava
- 2011-07-11: Found n = 2323205, Thomas Ritschel
- 2010-01-03: Checked to n = 1908000, Predrag Minovic
- 2009-02-13: Checked to n = 1880000, Predrag Minovic
- 2008-12-16: Found n = 1837873, Even Stokkedalen
- 2007-01-05: Found n = 1344313, David Metcalfe
- 2006-09-28: Found n = 1084010, David Metcalfe
- 2006-03-02: Found n = 902474, Robert Smith
- 2005-08-12: Found n = 712294, Robert Smith
- 2005-05-17: Found n = 656264, Robert Smith
- 2005-02-27: Found n = 568780, Robert Smith
- 2004-05-13: Found n = 454681, 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