20060317, 18:57  #1 
Nov 2003
2·1,811 Posts 
The Second RPS Drive
In the second RPS drive we'll search for primes k*2^n1 for 20 small k's
107 <= k <= 239 in the n=210000600000 range. Please reserve one or more files from the list below, and when you are done kindly mail your results to Kosmaj. If you find a prime that qualifies for Top5000 primes please report it there and either to this thread or the Post Primes Here thread. If you find a prime that doesn't qualify for Top5000 report it to this thread only. I'll report completed ranges to Wilfrid Keller as "completed by RPS". Since we'd like not only to find primes but also to report completed ranges to Keller please run the files only on reliable machines using reliable LLR clients. Note that some reportable primes for these k's have been already found, I'll post the list in a separate message. If you find one of those, please just report it to this thread. All found primes are listed on the "Riesel list k<300" status page. Number of new primes found per k: Code:
107 3 145 3 179 3 227 2 115 2 149 1 181 11 229 2 131 167 4 185 6 233 133 3 169 1 187 3 235 3 143 2 175 6 221 239 1 Total number of new primes found so far: 56 210270k: text (3.4M), zip (800k). 270330k: text (3.4M), zip (800k). 330400k: zip (920k) 400500k: zip (1.3M) 500600k: zip (1.3M) All primes found in the n=210600k range: 56 new primes, and 5 confirmed. Code:
Range Tested by 210,000495,000  RPS  Complete 495,000500,000  segmtfault  Complete 500,000550,000  RPS  Complete 550,000552,000  Kosmaj  Complete 552,000553,000  amphoria  Complete 553,000554,000  LSoule  Complete (Prime: 181 553989) 554,000555,000  amphoria  Complete 555,000557,000  Thomas  Complete (Prime: 235 556077) 557,000558,000  Kosmaj  Complete 558,000560,000  LSoule  Complete 560,000561,000  amphoria  Complete (Prime: 229 560259) 561,000562,000  LSoule  Complete 562,000563,000  amphoria  Complete 563,000564,000  Kosmaj  Complete (Prime: 181 563997) 564,000566,000  Thomas  Complete 566,000567,000  Battlemaxx  Complete 567,000568,000  Kosmaj  Complete 568,000570,000  LSoule  Complete 570,000571,000  amphoria  Complete 571,000572,000  LSoule  Complete 572,000573,000  amphoria  Complete 573,000575,000  Thomas  Complete 575,000577,000  Kosmaj  Complete 577,000578,000  LSoule  Complete 578,000579,000  amphoria  Complete 579,000580,000  LSoule  Complete 580,000581,000  amphoria  Complete 581,000582,000  Battlemaxx  Complete 582,000583,000  LSoule  Complete 583,000584,000  Kosmaj  Complete 584,000586,000  amphoria  Complete 586,000587,000  Kosmaj  Complete (Prime: 229 586795) 587,000590,000  LSoule  Complete 590,000591,000  Kosmaj  Complete 591,000592,000  VBCurtis  Complete 592,000594,000  amphoria  Complete (Prime: 149 592968) 594,000595,000  Kosmaj  Complete 595,000596,000  LSoule  Complete 596,000597,000  Kosmaj  Complete 597,000598,000  amphoria  Complete 598,000599,000  LSoule  Complete 599,000600,000  Kosmaj  Complete All files taken  The drive is over! Last fiddled with by Kosmaj on 20061104 at 10:09 
20060317, 19:04  #2 
Nov 2003
3622_{10} Posts 
Known primes
The following 5 primes have already been found by others. If you find one of them please just report about it to this thread.
149 212460 ... confirmed 229 220147 ... confirmed 235 231927 ... confirmed 133 238163 ... confirmed 107 267916 ... confirmed Last fiddled with by lsoule on 20060328 at 17:48 
20060317, 19:23  #3 
Nov 2004
California
2^{3}·3·71 Posts 
Taking 210212

20060317, 20:05  #4 
Nov 2003
2·1,811 Posts 
I'll take 212214.

20060318, 04:23  #5 
Nov 2004
California
2^{3}·3·71 Posts 
Taking 214216

20060318, 16:11  #6 
Nov 2003
2·1,811 Posts 
149*2^2124601 confirmed to be prime.
Taking 216218. 
20060318, 18:21  #7 
"Dave"
Sep 2005
UK
2·19·73 Posts 
Taking 218220

20060318, 18:52  #8 
Nov 2003
2·1,811 Posts 
181*2^2126471 is prime! (64016 digits)
Confirmed by pfgw. Too small for Top5000 but this is the first new prime in the 2nd Drive 
20060318, 23:27  #9 
Jun 2004
California
277 Posts 
Congratulations :)
Taking 220222 
20060319, 01:39  #10 
Nov 2004
California
2^{3}×3×71 Posts 
Taking 222224

20060319, 02:20  #11  
Jun 2004
California
277 Posts 
Quote:
229*2^2201471 is prime! Time : 80.412 sec. 

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