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2006-03-17, 18:57
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#1 |
Nov 2003
2·1,811 Posts |
The Second RPS Drive
In the second RPS drive we'll search for primes k*2^n-1 for 20 small k's
107 <= k <= 239 in the n=210000-600000 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 Top-5000 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 Top-5000 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: 56 210-270k: text (3.4M), zip (800k). 270-330k: text (3.4M), zip (800k). 330-400k: zip (920k) 400-500k: zip (1.3M) 500-600k: zip (1.3M) All primes found in the n=210-600k range: 56 new primes, and 5 confirmed. Code:
Range Tested by 210,000-495,000 - RPS - Complete 495,000-500,000 - segmtfault - Complete 500,000-550,000 - RPS - Complete 550,000-552,000 - Kosmaj - Complete 552,000-553,000 - amphoria - Complete 553,000-554,000 - LSoule - Complete (Prime: 181 553989) 554,000-555,000 - amphoria - Complete 555,000-557,000 - Thomas - Complete (Prime: 235 556077) 557,000-558,000 - Kosmaj - Complete 558,000-560,000 - LSoule - Complete 560,000-561,000 - amphoria - Complete (Prime: 229 560259) 561,000-562,000 - LSoule - Complete 562,000-563,000 - amphoria - Complete 563,000-564,000 - Kosmaj - Complete (Prime: 181 563997) 564,000-566,000 - Thomas - Complete 566,000-567,000 - Battlemaxx - Complete 567,000-568,000 - Kosmaj - Complete 568,000-570,000 - LSoule - Complete 570,000-571,000 - amphoria - Complete 571,000-572,000 - LSoule - Complete 572,000-573,000 - amphoria - Complete 573,000-575,000 - Thomas - Complete 575,000-577,000 - Kosmaj - Complete 577,000-578,000 - LSoule - Complete 578,000-579,000 - amphoria - Complete 579,000-580,000 - LSoule - Complete 580,000-581,000 - amphoria - Complete 581,000-582,000 - Battlemaxx - Complete 582,000-583,000 - LSoule - Complete 583,000-584,000 - Kosmaj - Complete 584,000-586,000 - amphoria - Complete 586,000-587,000 - Kosmaj - Complete (Prime: 229 586795) 587,000-590,000 - LSoule - Complete 590,000-591,000 - Kosmaj - Complete 591,000-592,000 - VBCurtis - Complete 592,000-594,000 - amphoria - Complete (Prime: 149 592968) 594,000-595,000 - Kosmaj - Complete 595,000-596,000 - LSoule - Complete 596,000-597,000 - Kosmaj - Complete 597,000-598,000 - amphoria - Complete 598,000-599,000 - LSoule - Complete 599,000-600,000 - Kosmaj - Complete All files taken - The drive is over! Last fiddled with by Kosmaj on 2006-11-04 at 10:09 |
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2006-03-17, 19:04
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#2 |
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Nov 2003
362210 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 2006-03-28 at 17:48 |
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2006-03-17, 19:23
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#3 |
Nov 2004
California
23·3·71 Posts |
Taking 210-212
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2006-03-17, 20:05
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#4 |
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Nov 2003
2·1,811 Posts |
I'll take 212-214.
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2006-03-18, 04:23
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#5 |
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Nov 2004
California
23·3·71 Posts |
Taking 214-216
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2006-03-18, 16:11
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#6 |
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Nov 2003
2·1,811 Posts |
149*2^212460-1 confirmed to be prime.
Taking 216-218. |
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2006-03-18, 18:21
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#7 |
"Dave"
Sep 2005
UK
2·19·73 Posts |
Taking 218-220
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2006-03-18, 18:52
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#8 |
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Nov 2003
2·1,811 Posts |
181*2^212647-1 is prime! (64016 digits)
Confirmed by pfgw. Too small for Top-5000 but this is the first new prime in the 2nd Drive 
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2006-03-18, 23:27
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#9 |
Jun 2004
California
277 Posts |
Congratulations :)
Taking 220-222 |
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2006-03-19, 01:39
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#10 |
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Nov 2004
California
23×3×71 Posts |
Taking 222-224
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2006-03-19, 02:20
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#11 | |
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Jun 2004
California
277 Posts |
Quote:
229*2^220147-1 is prime! Time : 80.412 sec. |
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