Riesel list 1000<k<3000

Started: Feb 15, 2007
Last update: Feb 15, 2007

The project is to search primes of the form k*2^n-1.

Meaning of colors used in the table:
yellow, reserved and in progress by respective individuals
gray, available

The “Weight” column lists the number of candidates left for n<10k in a sieve to p=100M.

Special thanks to Wilfrid Keller for giving us the idea to search in the first place.

k

Reserved

Weight

k*2^n-1 is prime for following n's

1001

Gryphon


[PS Gryphon at 540k]

1031

Amphoria


6, 138, 534, 1686, 13338, 20010, 20778 [Amphoria at 800k]

1003- 1399

Peter Benson?


Unknown- 380k?

1401

 

619

7, 10, 17, 23, 37, 41, 106, 151, 239, 241, 311, 337, 343, 395, 421, 433, 835, 1834, 3361, 4805, 17303, 20701, 25573 (50k)

1403

 

686

4, 8, 20,

1405


586

3, 5,

1407


811

4, 12, 13

1409


322

4, 12, 16, 28, 36, 48, 144, 264, 1944, 2292, 4212, 4416, 5488, 12612 (25k)

1415


352

2, 4, 32, 44, 140, 170, 256, 268, 314, 458, 1330, 1778, 3320, 16810, 17170 (25k)

1421


287

2, 14, 162, 554, 974, 2054, 4386, 10394, 10914, 17694 (25k)

1423


127

3, 411, 2511, 4455 (25k)

1439


245

12, 36, 60, 248, 336, 612, 14592, 19956 (25k)

1447


297

133, 137, 265, 269, 417, 805, 809, 4165, 5449, 5853, 5977, 11565, 13809 (25k)

1449

Flatlander

1271


1505

 

676

(500k Thomas)

1515

Cruelty

1269

[Cruelty at 600k]

1785

Flatlander

1430


2000- 2300

 


(Thomas 200k-300k) for those k's not divisible by 3.

2009

Thomas


[Thomas 200k-350k]

2017

Thomas


[Thomas 200k-350k]

2021

Thomas


[Thomas 200k-350k]

2023

Thomas


[Thomas 200k-350k]

2039

Thomas


[Thomas 200k-350k]

2047

Thomas


[Thomas 200k-350k]

2051

Thomas


[Thomas 200k-350k]

2053

Thomas


[Thomas 200k-350k]

2065

Amphoria



2069

Thomas


[Thomas 200k-350k]

2073

Amphoria


[Amphoria 270k-305k]

2077

Thomas


[Thomas 200k-350k]

2081

Thomas


[Thomas 200k-350k]

2083

Thomas


[Thomas 200k-350k]

2087

Amphoria


[Amphoria 270k-305k]

2089

Amphoria


[Amphoria 270k-305k]

2093

Amphoria



2099

Thomas


[Thomas 200k-350k]

2107

Thomas


[Thomas 200k-350k]

2109

Amphoria



2111

Thomas


[Thomas 200k-350k]

2113

Thomas


[Thomas 200k-350k]

2123

Amphoria



2125

Amphoria



2129

Thomas


[Thomas 200k-350k]

2137

Thomas


[Thomas 200k-350k]

2141

Thomas


[Thomas 200k-350k]

2143

Thomas


[Thomas 200k-350k]

2151

Amphoria



2153

Amphoria



2155

Amphoria



2159

Thomas


[Thomas 200k-350k]

2167

Thomas


[Thomas 200k-350k]

2171

Thomas


[Thomas 200k-350k]

2173

Thomas


[Thomas 200k-350k]

2177

Amphoria



2179

Amphoria



2185

Amphoria



2189

Thomas


[Thomas 200k-350k]

2197

Thomas


[Thomas 200k-350k]

2199

Amphoria



2201

Thomas


[Thomas 200k-350k]

2203

Thomas


[Thomas 200k-350k]

2211

Amphoria


267747, 268226, 348073, 351181, 373102 [Amphoria 250k-305k]

2219

Thomas


[Thomas 200k-350k]

2227

Thomas


[Thomas 200k-350k]

2231

Thomas


[Thomas 200k-350k]

2233

Thomas


[Thomas 200k-350k]

2249

Thomas


[Thomas 200k-350k]

2257

Thomas


[Thomas 200k-350k]

2261

Thomas


[Thomas 200k-350k]

2263

Thomas


[Thomas 200k-350k]

2279

Thomas


[Thomas 200k-350k]

2287

Thomas


[Thomas 200k-350k]

2291

Thomas


[Thomas 200k-350k]

2293

Thomas


[Thomas 200k-350k]

2309

Thomas


[Thomas 200k-350k]

2317

Thomas


[Thomas 200k-350k]

2321

Thomas


[Thomas 200k-350k]

2323

Thomas


[Thomas 200k-350k]

2339

Thomas


[Thomas 200k-350k]

2347

Thomas


[Thomas 200k-350k]

2351

Thomas


[Thomas 200k-350k]

2353

Thomas


[Thomas 200k-350k]

2369

Thomas


[Thomas 200k-350k]

2377

Thomas


[Thomas 200k-350k]

2381

Thomas


[Thomas 200k-350k]

2383

Thomas


[Thomas 200k-350k]

2683

Amphoria


2239 (Amphoria 1120000)