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Generalized Repunits of the form (10n-1)/9
Current data
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Remarks : |
The sequence A004023 in OEIS. Search history see here. |
Notes
History
- 2023-05-16: Proved prime for n = 86453 by Andreas Enge
- 2022-03-21: Proved prime for n = 49081 by Paul Underwood
- 2021-05-08: Found n = 8177207, Ryan Propper, Serge Batalov
- 2021-04-20: Found n = 5794777, Ryan Propper, Serge Batalov
- 2007-07-11: Found n = 270343, Maksym Voznyy, Anton Budnyy
- 2007-03-26: Found n = 109297, Paul Bourdelais, Harvey Dubner
- 2000-10-26: Found n = 86453, Lew Baxter
- 2000: Checked to n = 60000, Harvey Dubner
- 1999-09-09: Found n = 49081, Harvey Dubner
- 1998: Checked to n = 45000, Torbjörn Granlund
- 1994: Checked to n = 30000, Jeffrey Young
- 1992: Checked to n = 20000, Harvey Dubner
- 1985: Checked to n = 10000, Harvey Dubner
- 1985: Proved prime for n = 1031 by Hugh C. Williams, Harvey Dubner
- 1978: Checked to n = 2000, Hugh C. Williams, Eric Seah
- 1978: Found n = 1031, Hugh C. Williams, Eric Seah
