Currently there may be errors shown on top of a page, because of a missing Wiki update (PHP version and extension DPL3).
Navigation
Topics Help • Register • News • History • How to • Sequences statistics • Template prototypes

Difference between revisions of "Riesel problem 4"

From Prime-Wiki
Jump to: navigation, search
(add m=20)
(Level 19 finished with no primes)
 
Line 45: Line 45:
 
| [[:Category:Riesel 2 4Intervals18|18]] || {{Num|262144}} || {{Num|524287}} || 3 || class="color-Done" | 2 || 2
 
| [[:Category:Riesel 2 4Intervals18|18]] || {{Num|262144}} || {{Num|524287}} || 3 || class="color-Done" | 2 || 2
 
|-
 
|-
−
| [[:Category:Riesel 2 4Intervals19|19]] || {{Num|524288}} || {{Num|1048575}} || 1 || {{Num|{{PAGESINCATEGORY:Riesel 2 4Intervals19|R}}}} || ≥ {{PAGESINCATEGORY:Riesel 2 4Intervals19|pages|R}}
+
| [[:Category:Riesel 2 4Intervals19|19]] || {{Num|524288}} || {{Num|1048575}} || 1 || class="color-Done" | 0 || 0
 
|-
 
|-
−
| [[:Category:Riesel 2 4Intervals20|20]] || {{Num|1048576}} || {{Num|2097151}} || ≤ 1 || {{Num|{{PAGESINCATEGORY:Riesel 2 4Intervals20|R}}}} || ≥ {{PAGESINCATEGORY:Riesel 2 4Intervals20|pages|R}}
+
| [[:Category:Riesel 2 4Intervals20|20]] || {{Num|1048576}} || {{Num|2097151}} || 1 || {{Num|{{PAGESINCATEGORY:Riesel 2 4Intervals20|R}}}} || ≥ {{PAGESINCATEGORY:Riesel 2 4Intervals20|pages|R}}
 
|-
 
|-
 
| [[:Category:Riesel problem 4|unknown]] || {{Num|2097152}} || ∞ || {{#expr:{{PAGESINCATEGORY:Riesel problem 4|pages|R}}-1}} || class="color-Done" | 0 || {{#expr:{{PAGESINCATEGORY:Riesel problem 4|pages|R}}-1}}
 
| [[:Category:Riesel problem 4|unknown]] || {{Num|2097152}} || ∞ || {{#expr:{{PAGESINCATEGORY:Riesel problem 4|pages|R}}-1}} || class="color-Done" | 0 || {{#expr:{{PAGESINCATEGORY:Riesel problem 4|pages|R}}-1}}

Latest revision as of 18:50, 30 April 2024

The 4th Riesel problem involves determining the smallest Riesel numbers k•2n-1 for 777,149 < k < 790,841, the third and fourth Riesel k-values without any possible primes.

 
 : completely included in Prime-Wiki
m nmin nmax remain current target
0 1 1 6,845 0 957
1 2 3 5,888 1 1,472
2 4 7 4,416 2 1,648
3 8 15 2,768 3 1,276
4 16 31 1,492 2 769
5 32 63 723 0 352
6 64 127 371 0 171
7 128 255 200 0 84
8 256 511 116 0 39
9 512 1,023 77 0 37
10 1,024 2,047 40 11 11
11 2,048 4,095 29 12 12
12 4,096 8,191 17 5 5
13 8,192 16,383 12 2 2
14 16,384 32,767 10 2 2
15 32,768 65,535 8 3 3
16 65,536 131,071 5 1 1
17 131,072 262,143 4 1 1
18 262,144 524,287 3 2 2
19 524,288 1,048,575 1 0 0
20 1,048,576 2,097,151 1 0 ≥ 0
unknown 2,097,152 ∞ 1 0 1

Multi Reservation 23: The current nmax = 2,000,000 as of 2024-09-06.

Riesel primes
Retrieved from "https://www.rieselprime.de/z/index.php?title=Riesel_problem_4&oldid=31648"