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Old 2006-09-12, 14:06   #1
Kosmaj
 
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Nov 2003

E2616 Posts
Default 15*2^n-1, n>1M Reservation Thread

We are now ready to start testing 15*2^n-1, n>1M. The first segment to 1.1M has been sieved to 11.3T by amphoria, Larry, Templus and me. The average number of candidates per file is 48.9.

Happy hunting!

Found primes
15*2^1084010-1 (326321 digits) by Amphoria on Sep 28, 2006
15*2^1344313-1 (404680 digits) by Amphoria on Jan 5, 2007
15*2^1837873-1 (553257 digits) by mcduck on Dec 16, 2008
15*2^2323205-1 (699356 digits) by Thomas11 on Jul 11, 2011
15*2^3668194-1 (1104238 digits) by Ivica on Oct 15, 2013

Status
Code:
     Range            Tested by      Status
1,000,000-3,000,000 - RPS         - Complete (4 primes)
3,000,000-3,010,000 - Pepi37      - Complete
3,010,000-3,130,000 - Kosmaj      - Complete
3,130,000-3,150,000 - Pepi37      - Complete
3,150,000-3,170,000 - Kosmaj      - Complete
3,170,000-3,172,570 - Pepi37      - Complete
3,172,570-3,200,000 - Pepi37      - Complete
3,200,000-3,210,000 - Kosmaj      - Complete
3,210,000-3,220,000 - Pepi37      - Complete
3,220,000-3,300,000 - Pepi37      - Complete
3,300,000-3,320,000 - Pepi37      - Complete
3,320,000-3,400,000 - Pepi37      - Complete
3,400,000-3,500,000 - Pepi37      - Complete
3,500,000-3,600,000 - Pepi37      - Complete
3,600,000-3,650,000 - Pepi37      - Complete
3,650,000-3,800,000 - Ivica       - Complete (Prime: 15*2^3668194-1)
3,800,000-3,803,000 - Pepi37      - Complete
3,803,000-3,860,000 - Ivica       - Complete 
3,860,000-3,900,000 - Thomas11    - Complete
3,900,000-4,080,000 - Batalov     - Complete
4,080,000-4,400,000 - Batalov     - Complete
4,400,000-4,700,000 - Batalov     - Complete
4,700,000-4,800,000 - Thomas11    - Complete
4,800,000-5,000,000 - Thomas11    - Complete
5,000,000-5,200,000 - Thomas11    - Complete
5,200,000-5,500,000 - Thomas11    - Complete
5,500,000-5,800,000 - Thomas11    - In Progress
Available files
The attached file contains the 4-5M range, including already tested ones.
Please help yourself by extracting the range you want to test.
Extensively sieved by Psieve.
(36432 candidates).
Attached Files
File Type: zip k15_4Mto5M_400P.zip (97.9 KB, 128 views)

Last fiddled with by Thomas11 on 2018-04-11 at 07:37
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