Riesel base 6 - team drive #4 - EIGHT OR BUST! - Page 26

Batalov · 2010-06-28, 14:51

mdettweiler · 2010-06-28, 15:01

Yowzers! Another one that fast?

Talk about beating the odds!

Gee, maybe you'll find a prime for k=36772 as well below 750K? Then we'll only have to worry about k=1597 (which will be a chore to finish off in and of itself).

mdettweiler · 2010-06-28, 17:20

Quote:

Originally Posted by unconnected

43994*6^569498-1 is a probable prime! Wd1: 4BF6C3BE,00000000
Need to check with pfgw.

Note: I see that this has now been submitted to the top-5000, so I'm guessing it's safe to assume that the check with PFGW has been completed. I'll edit the first post accordingly.

philmoore · 2010-06-28, 20:45

Unbelievable! When you look at how close the last 4 primes are clustered, it does defy belief!

Congratulations again!

gd_barnes · 2010-06-28, 21:26

ASTOUNDING is all that I can say!! Congrats again Dimtry! As Phil said, this defies belief. We now have a reasonable chance of proving R6 within the next 1-2 years. But with only 2 k's remaining and the way things are going, we may just prove it by the end of the year.

This is the 50th top-5000 prime for CRUS. A nice round number for an unbelievable run of R6 primes.

This also removes k=43994 from R36, which now has 84 k's remaining. :-)

In a little while, I'll post the file for k=36772 for n=750K-1M, since no more sieving will be needed. It is the only k left to search to n=1M! k=1597 has already been searched. If we eliminate k=36772 by n=1M, this base will unbelievably go in our 1k remaining thread with a conjecture about 10 times higher than any other 1k base!

Would anyone like to get a sieving drive started for n=1M-2M? Although sieving the 2 k's together using sr2sieve should be about as fast as sieving them separately using sr1sieve, I think sieving them separately would be better because they will have much different optimum sieve depths. From the beginning of this drive, k=1597 has been by far the lowest weight k. The weight of the final 2 k's now remaining is:
k=1597: 272
k=36772: 583

Edit by Max: Response to sieving drive content moved to new sieving drive thread.

gd_barnes · 2010-06-28, 21:49

Per Dmitri's attached results file in post 274, he is now complete to n=600K.

Batalov · 2010-08-09, 07:53

I'll take 750-780K.

gd_barnes · 2010-08-09, 21:06

Dmitry,

Can you provide a status on k=36772 for n=600K-750K?

I'm somewhat holding off promoting the sieving drive for n=1M-2M for the 2 remaining k's until we get that one a little closer to n=1M so I'll be a little more interested than usual in getting statuses from people at least every 3-4 weeks.

Although everyone is welcome to work on the sieving drive now, likely near n=~850K, I'll promote it more and put some cores on it myself. It's currently at P=70T and I'm confident that we'll need to sieve to P>250T.

Gary

unconnected · 2010-08-12, 10:16

Quote:

Originally Posted by gd_barnes

Dmitry,

Can you provide a status on k=36772 for n=600K-750K?

~60% done

Batalov · 2010-08-17, 00:03

Done with 750-780K. Reserving 780-810K.

gd_barnes · 2010-08-17, 01:37

Quote:

Originally Posted by Batalov

Done with 750-780K. Reserving 780-810K.

It looks like through 785K was done so I'll show it as that in the 1st post.

2010-06-28, 21:26	#280
gd_barnes May 2007 Kansas; USA 101×103 Posts	ASTOUNDING is all that I can say!! Congrats again Dimtry! As Phil said, this defies belief. We now have a reasonable chance of proving R6 within the next 1-2 years. But with only 2 k's remaining and the way things are going, we may just prove it by the end of the year. This is the 50th top-5000 prime for CRUS. A nice round number for an unbelievable run of R6 primes. This also removes k=43994 from R36, which now has 84 k's remaining. :-) In a little while, I'll post the file for k=36772 for n=750K-1M, since no more sieving will be needed. It is the only k left to search to n=1M! k=1597 has already been searched. If we eliminate k=36772 by n=1M, this base will unbelievably go in our 1k remaining thread with a conjecture about 10 times higher than any other 1k base! Would anyone like to get a sieving drive started for n=1M-2M? Although sieving the 2 k's together using sr2sieve should be about as fast as sieving them separately using sr1sieve, I think sieving them separately would be better because they will have much different optimum sieve depths. From the beginning of this drive, k=1597 has been by far the lowest weight k. The weight of the final 2 k's now remaining is: k=1597: 272 k=36772: 583 Edit by Max: Response to sieving drive content moved to new sieving drive thread. Last fiddled with by gd_barnes on 2010-06-30 at 08:39 Reason: edit

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2010-06-28, 14:51	#276
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2⁴×593 Posts

2010-06-28, 15:01	#277
mdettweiler A Sunny Moo Aug 2007 USA (GMT-5) 3×2,083 Posts	Yowzers! Another one that fast? Talk about beating the odds! Gee, maybe you'll find a prime for k=36772 as well below 750K? Then we'll only have to worry about k=1597 (which will be a chore to finish off in and of itself).

2010-06-28, 20:45	#279
philmoore "Phil" Sep 2002 Tracktown, U.S.A. 3×373 Posts	Unbelievable! When you look at how close the last 4 primes are clustered, it does defy belief! Congratulations again!

2010-06-28, 21:49	#281
gd_barnes May 2007 Kansas; USA 101·103 Posts	Per Dmitri's attached results file in post 274, he is now complete to n=600K.

2010-08-09, 07:53	#282
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2⁴·593 Posts	I'll take 750-780K.

2010-08-09, 21:06	#283
gd_barnes May 2007 Kansas; USA 101×103 Posts	Dmitry, Can you provide a status on k=36772 for n=600K-750K? I'm somewhat holding off promoting the sieving drive for n=1M-2M for the 2 remaining k's until we get that one a little closer to n=1M so I'll be a little more interested than usual in getting statuses from people at least every 3-4 weeks. Although everyone is welcome to work on the sieving drive now, likely near n=~850K, I'll promote it more and put some cores on it myself. It's currently at P=70T and I'm confident that we'll need to sieve to P>250T. Gary