Current data
| k , b : |
221 , {{{Rb}}}
|
| Count : |
13
|
| Nash : |
418
|
| Max n : |
2,000,000
|
| Date : |
2021-02-13
|
|
| 2, 6, 42, 354, 402, 914, 1562, 10382, 34986, 81042, 104846, 730986, 749166
|
|
[[Category:Riesel {{{Rb}}}|#.....00221]][[Category:Riesel {{{Rb}}} Low-weight|#.....00221]]
History
- 2021-02-13: Checked to n = 2000000, Gary Barnes, double-check n=1000000-1850000, released
- 2021-02-13: Reserved by Gary Barnes
- 2014-09-13: Checked to n = 1850000, Steven Tjung
- 2013-08-22: Checked to n = 1500000, Steven Tjung
- 2012-08-19: Checked to n = 1100000, Steven Tjung
- 2009-12-05: Checked to n = 1100000, Steven Tjung
- 2009-05-15: Checked to n = 1050000, Steven Tjung
- 2009-04-06: none, Steven Tjung
- 2009-02-12: Checked to n = 1000000, Steven Tjung
- 2008-12-03: Checked to n = 860000, Michael Curtis
- 2008-10-26: Found n = 749166, Michael Curtis
- 2008-03-15: Reserved by Michael Curtis
- 2008-03-01: Checked to n = 740000, Borys Jaworski, released
- 2008-02-25: Found n = 730986, Borys Jaworski
- 2008-02-09: Checked to n = 700000, Borys Jaworski
- 2008-02-03: Checked to n = 690000, Borys Jaworski
- 2008-01-12: Checked to n = 650000, Borys Jaworski
- 2008-01-06: Checked to n = 640000, Borys Jaworski
- 2007-10-01: Reserved by Borys Jaworski
- 1998-11-30: Found n = 34986, Wilfrid Keller
