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2020-08-30, 07:48   #2135
pepi37

Dec 2011
After milion nines:)

3×449 Posts

Quote:
 Originally Posted by sweety439 6*354^25561-1 is composite

You are right, prime is just few digits above

Starting N+1 prime test of 6*354^25565-1
Using FMA3 FFT length 18K, Pass1=384, Pass2=48, clm=2, a = 3
6*354^25565-1 may be prime. Starting Lucas sequence...
Using FMA3 FFT length 18K, Pass1=384, Pass2=48, clm=2, P = 3
6*354^25565-1 may be prime, trying to compute gcd's
6*354^25565-1 may be prime, but N divides U((N+1)/59), P = 3
Restarting Lucas sequence with P = 5
Using FMA3 FFT length 18K, Pass1=384, Pass2=48, clm=2, P = 5
6*354^25565-1 may be prime, trying to compute gcd's
U((N+1)/59) is coprime to N!
6*354^25565-1 is prime! (65167 decimal digits, P = 5) Time : 84.596 sec.

Last fiddled with by pepi37 on 2020-08-30 at 07:49

 2020-08-30, 08:26 #2136 gd_barnes     May 2007 Kansas; USA 2·3·13·131 Posts Nice catch guys! Typo on the page. Now corrected.
 2020-08-30, 10:04 #2137 rebirther     Sep 2011 Germany 41×61 Posts S446 tested to n=300k (100-300k) 1 prime found, 6 remain Results emailed - Base released
2020-08-30, 15:58   #2138
matzetoni

Feb 2019

7410 Posts
releasing S342 (n=100k-200k)

I have finished S342 from n=100k to 200k and will release this base. I found 1 prime:

246*342^168008+1 is prime! (425740 decimal digits)

Sadly a bit too small for T5K, but still nice. Six k's are left now. Residues are in the attached zip file.
Attached Files
 sierp-base342-100K-200K.zip (432.1 KB, 7 views)

 2020-09-01, 09:40 #2139 gd_barnes     May 2007 Kansas; USA 2·3·13·131 Posts S495 is complete to n=10K; 1478 primes were found for n=2500-10K; 1768 k's remain; base released.
 2020-09-03, 06:24 #2140 gd_barnes     May 2007 Kansas; USA 27EA16 Posts Reserving R394 to n=300K for Ian and me.
 2020-09-03, 17:34 #2141 rebirther     Sep 2011 Germany 250110 Posts S402 tested to n=500k (400-500k) nothing found, 1 remain Results emailed - Base released
 2020-09-04, 15:39 #2142 rebirther     Sep 2011 Germany 41·61 Posts Reserving R337 to n=300k (200-300k) for BOINC Reserving R409 to n=300k (200-300k) for BOINC
 2020-09-09, 09:42 #2143 rebirther     Sep 2011 Germany 41×61 Posts S256 tested to n=1M (800k-1M) nothing found, 1 remain Results emailed - Base released
 2020-09-09, 14:52 #2144 rebirther     Sep 2011 Germany 41·61 Posts Reserving S328 to n=1M (900k-1M) for BOINC
2020-09-09, 17:57   #2145
MisterBitcoin

"Nuri, the dragon :P"
Jul 2016
Good old Germany

2E116 Posts

Its been overdue by months now, but i have an update for R312. I forgot about this reservation for nearly 6 months now. :c

However i have attached all found primes so far up to n=9000. Testing is now at 9,3K and this time i wont forget it. ~~hopefully~~
(there might be a few k´s that have 2 primes in it, i looked into the ini today and saw i wasnt using the "StopOnPrimedk" option)
Attached Files
 primes found.txt (27.4 KB, 8 views)

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