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Generalized Cullen primes of the form n•31n+1
Current data
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History
- 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
- 2023-05-24: Checked n = 200000 - 400000, Richard Kapek, released
- 2023-05-08: Reserved by Richard Kapek for n = 200000 - 400000
- 2023-04-27: Checked n = 100001 - 200000, Mark Rodenkirch, double-check n = 100001 - 174855, released
- 2023-04-17: Checked n = 2 - 100000, Mark Rodenkirch, double-check
- 2023-04-01: Reserved by Mark Rodenkirch to n = 200000
- 2010: Checked n = 14879 - 174855, Günter Löh
- 2002-04-02: Found n = 82960, Günter Löh
- 2000: Checked n = 1907 - 14879, Wilfrid Keller
- 1989: Checked n = 1 - 1907, Harvey Dubner
