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Riesel primes of the form 8•10n-1
Reserved! This sequence is currently reserved by: Gary Barnes |
Current data
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Remarks : |
sequence A056721 in OEIS See also Near-repdigit 799...99 Studio Kamada |
Notes
History
- 2024-09-24: Reserved by Gary Barnes for n = 230000 - 600000
- 2024-01-30: Found n = 5112847, Ryan Propper, Serge Batalov
- 2020-08-04: Found n = 1715905, Ryan Propper, Serge Batalov
- 2017-10-13: Checked n = 1085000 - 1100000, Predrag Kurtovic
- 2017-10-07: Checked n = 1060001 - 1085000, Predrag Kurtovic
- 2017-09-22: Checked n = 1040001 - 1060000, Predrag Kurtovic
- 2017-01-23: Checked n = 1030001 - 1040000, Predrag Kurtovic
- 2016-03-23: Checked n = 1016001 - 1030000, Predrag Kurtovic
- 2015-01-17: Checked n = 1000001 - 1016000, Predrag Kurtovic
- 2011-05-25: Found n = 608989, David Broadhurst
- 2011-04-17: Checked n = 200000 - 230000, Gary Barnes
- 2011-02-20: Checked n = 150000 - 200000, Gary Barnes
- 2011-01-18: Checked n = 100000 - 150000, Gary Barnes
- 2010-12-01: Checked n = 1 - 100000, Gary Barnes, double-check n = 1 - 30000
- 2010-11-06: Found n = 236891, David Broadhurst
- 2010-09-30: Checked n = 1 - 30000, Ray Chandler
- 2005-02-20: Checked n = 1600 - 3000, ??
- 2004-09-01: Found n = 74318, Eric J. Sorensen
- 2002-01-03: Found n = 49808, Eric J. Sorensen
- 2001-09-16: Found n = 21296, Eric J. Sorensen
- 2000-08-11: Checked n = 1 - 1600, Robert G. Wilson
- 2000-02-17: Found n = 2846, Ray Ballinger
- 2000-02-17: Found n = 2012, Ray Ballinger
- 1994-12-01: Found n = 11336, Harvey Dubner