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Riesel primes of the form 8•10n-1
Current data
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Remarks : |
sequence A056721 in OEIS See also Near-repdigit 799...99 Studio Kamada |
Notes
History
- 2024-01-30: Found n = 5112847, Ryan Propper, Serge Batalov
- 2020-08-04: Found n = 1715905, Ryan Propper
- 2017-10-13: Checked to n = 1100000, Predrag Kurtovic
- 2011-05-25: Found n = 608989, David Broadhurst
- 2010-11-06: Found n = 236891, David Broadhurst
- 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
- 2000-02-17: Found n = 2846, Ray Ballinger
- 2000-02-17: Found n = 2012, Ray Ballinger
- 1994-12-01: Found n = 11336, Harvey Dubner