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Riesel primes of the form 9957•2n-1
Current data
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Notes
- ↑ Sophie Germain n=1
- ↑ Twin n=2
- ↑ Sophie Germain n=21
History
- 2022-04-13: Checked to n = 500000, Alexander Jones, released
- 2021-10-11: Reserved by Alexander Jones
- 2021-04-16: Checked to n = 150000, Alexander Jones
- 2021-04-11: Checked to n = 100000, Alexander Jones
- 2020-08-28: Checked to n = 50000, Karsten Bonath
- 2011-06-06: Found n = 488246, Lennart Vogel, Twin Prime Search 480000