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Difference between revisions of "Cullen prime 4"

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{{Cullen prime
 
{{Cullen prime
 
|CuBase=4
 
|CuBase=4
−
|CuMaxn=250000
+
|CuMaxn=2000000
−
|CuDate=2018-08-14
+
|CuDate=2023-07-14
−
|CuReserved=Bryan Koen
+
|CuReserved=
 
|CuNlist=
 
|CuNlist=
−
1;C:[[Proth prime 1|{{Kbn|+|1|2|2}}]]
+
1;C:{{NPr|2}}
−
3;C:[[Proth prime 3|{{Kbn|+|3|2|6}}]]
+
3;C:{{NPr|3|6}}
−
7;C:[[Proth prime 7|{{Kbn|+|7|2|14}}]]
+
7;C:{{NPr|7|14}}
−
33;C:{{Kbn|+|33|2|66}}
+
33;C:{{NPr|33|66}}
−
67;C:{{Kbn|+|67|2|134}}
+
67;C:{{NPr|67|134}}
−
223;C:{{Kbn|+|223|2|446}}
+
223;C:{{NPr|223|446}}
−
663;C:{{Kbn|+|663|2|1326}}
+
663;C:{{NPr|663|1326}}
−
912;C:{{Kbn|+|57|2|1828}}
+
912;C:{{NPr|57|1828}}
−
1383;C:{{Kbn|+|1383|2|2766}}
+
1383;C:{{NPr|1383|2766}}
−
3777;33032;C:{{Kbn|+|3777|2|7554}}
+
3777;33032;C:{{NPr|3777|7554}}
−
3972;32248;C:{{Kbn|+|993|2|7946}}
+
3972;32248;C:{{NPr|993|7946}}
−
10669;C:{{Kbn|+|10669|2|21338}}
+
10669;C:{{NPr|10669|21338}}
−
48375;5614;C:{{Kbn|+|48375|2|96750}}
+
48375;5614;C:{{NPr|48375|96750}}
 +
1740349
 
|CuRemarks=The {{OEIS|l|A007646}}
 
|CuRemarks=The {{OEIS|l|A007646}}
 
}}
 
}}
 
==History==
 
==History==
 +
{{HistC|2023-07-14|2000000|Ryan Propper}}
 +
{{HistF|2023-07-05|1740349|Ryan Propper}}
 +
{{HistC|2023-05-28|500000|Mark Rodenkirch|631405}}
 +
{{HistR|2023-04-28|Mark Rodenkirch|629610}} to {{Vn}}=500000
 +
{{HistC|2023-04-23|2-100000|Mark Rodenkirch}}, double-checked
 
{{HistC|?|108770 - 250000|Steven Harvey}}
 
{{HistC|?|108770 - 250000|Steven Harvey}}
 
{{HistF|1999-10-07|48375|Kazuyoshi Asao}}
 
{{HistF|1999-10-07|48375|Kazuyoshi Asao}}
 
{{HistF|1989|3972|Harvey Dubner}}
 
{{HistF|1989|3972|Harvey Dubner}}
 
{{HistF|1989|3777|Harvey Dubner}}
 
{{HistF|1989|3777|Harvey Dubner}}

Revision as of 19:15, 14 July 2023

Current data

ASCII format : n*4^n+1
Base : 4
Count : 14
Max n : 2,000,000
Date : 2023-07-14
1[1], 3[2], 7[3], 33[4], 67[5], 223[6], 663[7], 912[8], 1383[9], 3777[10], 3972[11], 10669[12], 48375[13], 1740349
Remarks :
The sequence A007646 in OEIS

Notes

  1. Jump up ↑ Proth 22+1
  2. Jump up ↑ Proth 3•26+1
  3. Jump up ↑ Proth 7•214+1
  4. Jump up ↑ Proth 33•266+1
  5. Jump up ↑ Proth 67•2134+1
  6. Jump up ↑ Proth 223•2446+1
  7. Jump up ↑ Proth 663•21326+1
  8. Jump up ↑ Proth 57•21828+1
  9. Jump up ↑ Proth 1383•22766+1
  10. Jump up ↑ Proth 3777•27554+1
  11. Jump up ↑ Proth 993•27946+1
  12. Jump up ↑ Proth 10669•221338+1
  13. Jump up ↑ Proth 48375•296750+1

History

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