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Difference between revisions of "Cullen prime 4"
(add & correct history, add links to posts & prime, add remarks, top-5000 prime link, twins, & near Cullens) |
(add small prime to history) |
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|CuBase=4 | |CuBase=4 | ||
|CuMaxn=2000000 | |CuMaxn=2000000 | ||
| − | |CuDate= | + | |CuDate=2024-10-25 |
|CuReserved= | |CuReserved= | ||
|CuNlist= | |CuNlist= | ||
| Line 19: | Line 19: | ||
48375;5614;C:{{NPr|48375|96750}}, {{NCu|+|96749}} | 48375;5614;C:{{NPr|48375|96750}}, {{NCu|+|96749}} | ||
1740349;136235;C:{{NPr|1740349|3480698}}, {{NCu|+|3480697}} | 1740349;136235;C:{{NPr|1740349|3480698}}, {{NCu|+|3480697}} | ||
| − | |CuRemarks=The {{OEIS|l|A007646}}<br> | + | |CuRemarks=The {{OEIS|l|A007646}}<br>Sequence is the same as [[Cullen prime P 2|Near Cullen ({{Vn}}+1)*2^{{Vn}}+1]] for odd {{Vn}}. |
}} | }} | ||
==History== | ==History== | ||
| + | {{HistC|2024-10-25|1-100000|Gary Barnes|1058845}}, double-check, released | ||
{{HistC|2023-07-14|500000-2000000|Ryan Propper|858785}}, released | {{HistC|2023-07-14|500000-2000000|Ryan Propper|858785}}, released | ||
{{HistF|2023-07-05|1740349|Ryan Propper|858708}} | {{HistF|2023-07-05|1740349|Ryan Propper|858708}} | ||
| Line 36: | Line 37: | ||
{{HistF|1989|3972|Harvey Dubner}} | {{HistF|1989|3972|Harvey Dubner}} | ||
{{HistF|1989|3777|Harvey Dubner}} | {{HistF|1989|3777|Harvey Dubner}} | ||
| + | {{HistF|1989|1383|Harvey Dubner}} | ||
Latest revision as of 06:00, 9 November 2024
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
