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Old 2008-02-07, 17:25   #221
gd_barnes
 
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Reserving Sierp base 6 k=10107, 13215, and 14505. I'll take them up to about n=60K or until I find primes or get tired of them.

I may combine them in with team drive 3 after hitting n=60K.


Gary
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Old 2008-02-07, 22:29   #222
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Confirmed by pfgw:
4001*28^56146-1 is a probable prime. Time: 1318.830 sec.
Please credit George Woltman's PRP for this result!

Tralala, Willem.
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Old 2008-02-08, 20:35   #223
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Sierp base 12 k=404 is complete to n=100K. No primes. Now unreserved.

Sierp base 6 k=10107, 13215, and 14505 are complete to n=60K. No primes. Now unreserved. Sieved file links up to n=100K are on the reservations web page.


Gary
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Old 2008-02-10, 01:02   #224
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I'm reserving the remaining base 30 Riesel values for 25k < n < 100k

659 (25K)
774 (25K)
1024 (25K)
1580 (25K)
1642 (25K)
1873 (25K)
1936 (25K)
2293 (25K)
2538 (25K)
2916 (25K)
3253 (25K)
3256 (25K)
3719 (25K)
4372 (25K)
4897 (25K)
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Old 2008-02-10, 04:47   #225
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Quote:
Originally Posted by rogue View Post
I'm reserving the remaining base 30 Riesel values for 25k < n < 100k

Great! Welcome to the effort Rogue.


Gary
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Old 2008-02-16, 17:24   #226
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After a draft of 10k n’s without primes, there are two in a row:

83988*31^41706-1 is prime
111038*31^42197-1 is prime

Jippee

That leaves 11 candidates on Riesel 31
(26064 candidates to test upto 100k)
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Old 2008-02-17, 12:23   #227
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Riesel base 30 k=225, 239, 249 only testing to n=50k forgot to say how far I was going when I reserved these.

Last fiddled with by gd_barnes on 2010-05-11 at 05:12 Reason: remove base > 32
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Old 2008-02-20, 00:19   #228
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Riesel Base 30 k=225, 239, 249 tested to n=50k No Primes found, releasing these. Results e-mailed, let me know if you got them.
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Old 2008-02-21, 01:31   #229
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base 16 k=443 complete to 550k base 2 (~135k base 16). LLR in progress 550-650k and 650k-up. I have sieved to 1.2M fully, and started a sieve from 1.2M to 3M (750k base 16).

I *will* defeat this k.

5076 base 28 finally in progress, should be complete tomorrow sometime to 25k, no further reservations. Apologies for the delay.
-Curtis
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Old 2008-02-21, 05:19   #230
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Quote:
Originally Posted by VBCurtis View Post
base 16 k=443 complete to 550k base 2 (~135k base 16). LLR in progress 550-650k and 650k-up. I have sieved to 1.2M fully, and started a sieve from 1.2M to 3M (750k base 16).

I *will* defeat this k.

5076 base 28 finally in progress, should be complete tomorrow sometime to 25k, no further reservations. Apologies for the delay.
-Curtis
Thanks for the update Curtis. Interestingly a multiple of k=443, that is k=7088, is one of 51 k's remaining for Riesel base 256 (all remaining searched to at least n=20K, i.e. n=160K base 2).

If you can find a prime for k=443 where n==(4 mod 8), that eliminates the equivalent of k=443 in 3 different bases at once. Good luck with THAT!


Gary
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Old 2008-02-23, 13:48   #231
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Hi everyone,

First of all: Thank you Gary for tracking all this! Your webpage make this obscure corner of the prime world easy to track.

I've finished some of my range, alas without primes:
233*28^n-1 100000
1422*28^n-1 100000

1611*22^n+1 200000
588*30^n+1 100000
278*30^n+1 100000

I still have (32 || 65 || 155) *26^n+1, it is at 95219 now. It stalled because other people keep using that PC. Maybe this week I'll clean up.

My project on k*19^n-1:
With PFGW I found ca 5000 k's remaining after taking n until 2000.
With srsieve and LLR I've taken these to n = 5700. I now have 2200 k's remaining.
Currently I am planning to take them to 25k. That's going to take two months or more.

Having fun, Willem.
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