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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 Sequence is the same as Near Cullen (n+1)*2^n+1 for odd n. |
Notes
- ↑ Twin n=1, Proth 22+1, Near Cullen 2•21+1
- ↑ Twin n=3, Proth 3•26+1, Near Cullen 6•25+1
- ↑ Proth 7•214+1, Near Cullen 14•213+1
- ↑ Proth 33•266+1, Near Cullen 66•265+1
- ↑ Proth 67•2134+1, Near Cullen 134•2133+1
- ↑ Proth 223•2446+1, Near Cullen 446•2445+1
- ↑ Proth 663•21326+1, Near Cullen 1326•21325+1
- ↑ Proth 57•21828+1, Near Cullen 1824•21823+1
- ↑ Proth 1383•22766+1, Near Cullen 2766•22765+1
- ↑ Proth 3777•27554+1, Near Cullen 7554•27553+1
- ↑ Proth 993•27946+1, Near Cullen 7944•27943+1
- ↑ Proth 10669•221338+1, Near Cullen 21338•221337+1
- ↑ Proth 48375•296750+1, Near Cullen 96750•296749+1
- ↑ Proth 1740349•23480698+1, Near Cullen 3480698•23480697+1
History
- 2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
- 2023-07-14: Checked n = 500000 - 2000000, Ryan Propper, released
- 2023-07-05: Found n = 1740349, Ryan Propper
- 2023-07-04: Reserved by Ryan Propper for n = 500000 - 2000000
- 2023-05-28: Checked n = 100000 - 500000, Mark Rodenkirch, double-check n = 100000 - 250000, released
- 2023-04-28: Reserved by Mark Rodenkirch to n = 500000
- 2023-04-23: Checked n = 2 - 100000, Mark Rodenkirch, double-check
- 2011: Checked n = 108770 - 250000, Steven Harvey
- 2002: Checked n = 10046 - 108769, Günter Löh
- 2000-12: Found n = 10669, Günter Löh
- 2000: Checked n = 6107 - 10046, Wilfrid Keller
- 1999-07-10: Found n = 48375, Kazuyoshi Asao
- 1989: Checked n = 1 - 6107, Harvey Dubner
- 1989: Found n = 3972, Harvey Dubner
- 1989: Found n = 3777, Harvey Dubner
- 1989: Found n = 1383, Harvey Dubner
