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Generalized Cullen primes of the form n•4n+1
Current data
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Remarks : |
The sequence A007646 in OEIS |
Notes
- Jump up ↑ Proth 22+1
- Jump up ↑ Proth 3•26+1
- Jump up ↑ Proth 7•214+1
- Jump up ↑ Proth 33•266+1
- Jump up ↑ Proth 67•2134+1
- Jump up ↑ Proth 223•2446+1
- Jump up ↑ Proth 663•21326+1
- Jump up ↑ Proth 57•21828+1
- Jump up ↑ Proth 1383•22766+1
- Jump up ↑ Proth 3777•27554+1
- Jump up ↑ Proth 993•27946+1
- Jump up ↑ Proth 10669•221338+1
- Jump up ↑ Proth 48375•296750+1
History
- 2023-05-28: Checked to n = 500000, Mark Rodenkirch
- 2023-04-28: Reserved by Mark Rodenkirch to n=500000
- 2023-04-23: Checked n = 2 - 100000, Mark Rodenkirch, double-checked
- ?: Checked n = 108770 - 250000, Steven Harvey
- 1999-10-07: Found n = 48375, Kazuyoshi Asao
- 1989: Found n = 3972, Harvey Dubner
- 1989: Found n = 3777, Harvey Dubner