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2020-07-06, 17:33
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#1662 | |
May 2007
Kansas; USA
19×541 Posts |
Quote:
Good catch. This revealed an error in this base. k=608 (not k=68) was only tested up to n=25K. No prime was found. From this point forward k=608 was misread as k=68 and so k=68, despite having several small primes including at n=1, was tested for n>25K with a prime quickly found at n=29173. So this brings to light the fact that k=608 has only been tested to n=25K and has never had a prime found. I have updated the pages accordingly including removing the larger prime for k=68 and will begin a search 608*55^n-1 for n>25K. Last fiddled with by gd_barnes on 2020-07-06 at 17:58 |
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2020-07-06, 20:15
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#1663 |
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May 2007
Kansas; USA
19·541 Posts |
An odd state of affairs here:
After all of that messing around with sieving 608*55^n-1 for n=25K-100K (and preparing to sieve n=100K-300K) because it was found to erroneously only have been tested to n=25K: 608*55^25062-1 is prime! Found by the 5th test in the sieve file! So R55 is back to 5 k's remaining. 
Last fiddled with by gd_barnes on 2020-07-06 at 20:15 |
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2020-07-19, 05:41
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#1664 |
Sep 2011
Germany
A7016 Posts |
Reserving S88 to n=500k (250-500k) for BOINC
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2020-07-21, 18:11
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#1665 |
Dec 2011
After milion nines:)
3×463 Posts |
S 53
K4 S53 at 1.61M
S53 -200K-305K -res sent to Gary Base released ( except K4 of course) |
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2020-08-11, 17:56
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#1666 |
"Mark"
Apr 2003
Between here and the
11000000100102 Posts |
Here are a bunch of primes for R66. The k between 94245817 and 99461099 still need to be tested to n=25000. All k outside of that range have been tested to n=25000. I hope to complete finish it off in a few weeks. Since I started this on 10/19 of last year, I will be happy to have finished it. It would probably take less time to get S3 to n=50000 than the time it took me to do this (and no, that is not next on my list).
Gary, if you think that there are other gaps that I could have missed, please let me know and I'll investigate. |
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2020-08-14, 16:04
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#1667 |
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Sep 2011
Germany
24×167 Posts |
Reserving S91 to n=500k (200-500k) for BOINC
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2020-08-24, 01:44
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#1668 | |
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May 2007
Kansas; USA
240478 Posts |
Quote:
Balancing: k's previously remaining: 85939 subtract primes in file: -17587 add k's that already had primes: +9 k's currently remaining: 68361 primes for k's that already had primes: 81440638*66^24455-1 81587724*66^21701-1 81638180*66^14564-1 81790115*66^12386-1 83244685*66^23606-1 83284753*66^16709-1 83508219*66^12744-1 83790529*66^18610-1 83800758*66^14408-1 Their previous primes: 81440638*66^10679-1 81587724*66^10915-1 81638180*66^10923-1 81790115*66^10952-1 83244685*66^10974-1 83284753*66^10943-1 83508219*66^10955-1 83790529*66^10907-1 83800758*66^10907-1 |
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2020-08-26, 15:17
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#1669 |
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"Mark"
Apr 2003
Between here and the
2·3·13·79 Posts |
The last of the primes. The search is now down to n=25000 and the range is released.
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2020-09-05, 06:09
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#1670 |
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Sep 2011
Germany
24×167 Posts |
S88 tested to n=500k (250-500k)
2 primes found, 6 remain Results emailed - Base released |
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2020-09-26, 21:56
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#1671 |
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Dec 2011
After milion nines:)
3×463 Posts |
Progress update
K4 S53 at 1.65M
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2020-10-10, 06:28
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#1672 |
"Curtis"
Feb 2005
Riverside, CA
22·1,151 Posts |
R36 is, finally, complete to 400k (800k base-6). Testing continues.
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