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Difference between revisions of "Proth prime 7 4"
(check to n=300K & add history) |
(n=1640811 & reservation) |
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Line 2: | Line 2: | ||
|Pk=4 | |Pk=4 | ||
|Pb=7 | |Pb=7 | ||
− | |PCount= | + | |PCount=26 |
|PNash=3135 | |PNash=3135 | ||
|PMaxn=300000 | |PMaxn=300000 | ||
− | |PDate=2024-09- | + | |PDate=2024-09-18 |
− | |PReserved= | + | |PReserved=Ryan Propper |
|PMultiRes= | |PMultiRes= | ||
|PNlist= | |PNlist= | ||
Line 34: | Line 34: | ||
254621;91232 | 254621;91232 | ||
266782;91244 | 266782;91244 | ||
+ | 1640811;138542 | ||
|PRemarks={{OEIS|l|A204323}}<br>For all even {{Vn}}-values {{Kbn|+|4|7|n}} is a [[Generalized Fermat number]]. | |PRemarks={{OEIS|l|A204323}}<br>For all even {{Vn}}-values {{Kbn|+|4|7|n}} is a [[Generalized Fermat number]]. | ||
|PSieve= | |PSieve= | ||
}} | }} | ||
==History== | ==History== | ||
+ | {{HistF|2020-09-18|1640811|Ryan Propper}} | ||
+ | {{HistR|2020-09-17|Ryan Propper|1053969}} to {{Rn|3000000|3000000}} | ||
{{HistC|2024-09-16|1-300000|Gary Barnes|1053783}}, double-check {{Rn|1|41500}}, released | {{HistC|2024-09-16|1-300000|Gary Barnes|1053783}}, double-check {{Rn|1|41500}}, released | ||
{{HistC|2020-07-21|1-41500|Paul Vanderveen}} | {{HistC|2020-07-21|1-41500|Paul Vanderveen}} |
Latest revision as of 01:37, 18 September 2024
Reserved! This sequence is currently reserved by: Ryan Propper |
Current data
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Remarks : |
sequence A204323 in OEIS For all even n-values 4•7n+1 is a Generalized Fermat number. |
History
- 2020-09-18: Found n = 1640811, Ryan Propper
- 2020-09-17: Reserved by Ryan Propper to n = 3000000
- 2024-09-16: Checked n = 1 - 300000, Gary Barnes, double-check n = 1 - 41500, released
- 2020-07-21: Checked n = 1 - 41500, Paul Vanderveen
- 2009-12-24: Found n = 266782, Brian Lody
- 2009-12-22: Found n = 254621, Brian Lody
- 2004-03-01: Found n = 94133, Peter Benson
- 1998-11-18: Found n = 16474, David W. Linton