20200706, 17:00  #1662 
Nov 2016
23×97 Posts 
The "top 10 primes" for R55 has the prime 68*55^291731, however, 68*55^11 = 3739 is prime, thus this prime is not the first prime for k=68

20200706, 17:33  #1663  
May 2007
Kansas; USA
2^{3}·3·5^{2}·17 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^n1 for n>25K. Last fiddled with by gd_barnes on 20200706 at 17:58 

20200706, 20:15  #1664 
May 2007
Kansas; USA
10200_{10} Posts 
An odd state of affairs here:
After all of that messing around with sieving 608*55^n1 for n=25K100K (and preparing to sieve n=100K300K) because it was found to erroneously only have been tested to n=25K: 608*55^250621 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 20200706 at 20:15 
20200719, 05:41  #1665 
Sep 2011
Germany
999_{16} Posts 
Reserving S88 to n=500k (250500k) for BOINC

20200721, 18:11  #1666 
Dec 2011
After milion nines:)
3^{2}·149 Posts 
S 53
K4 S53 at 1.61M
S53 200K305K res sent to Gary Base released ( except K4 of course) 
20200811, 17:56  #1667 
"Mark"
Apr 2003
Between here and the
17×347 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. 
20200814, 16:04  #1668 
Sep 2011
Germany
2457_{10} Posts 
Reserving S91 to n=500k (200500k) for BOINC

20200824, 01:44  #1669  
May 2007
Kansas; USA
2^{3}·3·5^{2}·17 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*66^244551 81587724*66^217011 81638180*66^145641 81790115*66^123861 83244685*66^236061 83284753*66^167091 83508219*66^127441 83790529*66^186101 83800758*66^144081 Their previous primes: 81440638*66^106791 81587724*66^109151 81638180*66^109231 81790115*66^109521 83244685*66^109741 83284753*66^109431 83508219*66^109551 83790529*66^109071 83800758*66^109071 

20200826, 15:17  #1670 
"Mark"
Apr 2003
Between here and the
17×347 Posts 
The last of the primes. The search is now down to n=25000 and the range is released.

20200905, 06:09  #1671 
Sep 2011
Germany
3^{3}×7×13 Posts 
S88 tested to n=500k (250500k)
2 primes found, 6 remain Results emailed  Base released 
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