Bases 4-32 reservations/statuses/primes - Page 5

gd_barnes · 2007-12-26, 03:46

Cut-and-paste from tcadigan's prime find on Sierp base 16. Not moved here because it would be prior to first post.

Quote:

Originally Posted by tcadigan

7773*2^199784+1 is prime! Time: 213.884 sec.

i.e.
7773*16^49946+1
60145 digits

I'll try my 6663 to 100K next

gd_barnes · 2007-12-26, 17:08

Status from Carlos (em99010pepe):

404*12^n+1 is complete to n=79.6K.

He decided not to test 288*13^n-1 so that one is now available. It had already been tested to n=62K and a sieved file is available in the sieving thread up to n=100K.

Gary

tnerual · 2007-12-26, 19:51

32673*2^101924+1 is prime! Time: 51.669 sec.
or 32673*16^25481+1

gd_barnes · 2007-12-26, 20:45

Quote:

Originally Posted by tnerual

32673*2^101924+1 is prime! Time: 51.669 sec.
or 32673*16^25481+1

Great; another down and 54 k's to go for Sierp base 16. That was a quick one; just above our prior testing limit of n=25K.

Are you searching any more k's right now? If so, I'll show them reserved by you to keep any double-work from happening. Also, if you want a file sieved to P=400G on any k that you're interested in for Sierp base 16, I can send it to you ~10-11 PM today CST US (4-5 AM Thurs. GMT) after our big sieve is done to that point.

Thanks for searching.

Gary

gd_barnes · 2007-12-26, 21:10

Tnerual is reserving Sierp base 16 k=34543 for n=25K-100K.

gd_barnes · 2007-12-27, 20:02

Michaf has started and reserved Riesel base 31 and is continuing. There are currently 43 k's remaining at n=5K.

gd_barnes · 2007-12-27, 23:06

Reserving k=64518 for Sierp base 16 up to n=100K.

This is by far the highest weight k remaining. The file is 50% larger than any other. Getting rid of it will help speed up the big sieve.

mdettweiler · 2007-12-28, 02:57

Status report on k=2908 for Sierpinski Base 16:

Tested up to n=75810 as of this posting. I switched to Gary's provided sieve file today, since at p=400G it was sieved much deeper than my original sieving (about p=121G). Still no primes as of yet.

gd_barnes · 2007-12-28, 04:28

It didn't take long after reserving heavy-weight (relatively speaking) k=64518 for Sierp base 16.

64518*16^36998+1 is prime

53 k's remaining.

That removes 9726 testing candidates from the big sieve.

Much better!

mdettweiler · 2007-12-29, 18:34

Sierpinski Base 16 k=2908 status report:

Now at n=83622. This is sort of a milestone because I am now in top-5000 territory, so if I find a prime, it will be reportable! Still hoping for a prime on this one before I reach n=100k and release it. It's very low weight (relatively speaking) but I'm still hoping I'll be able to knock it out.

gd_barnes · 2007-12-29, 19:45

I am reserving Riesel base 16 up to n=25K for all k's. I started on it Friday. There are 40 k's remaining at n=19K. I'll post what is remaining on Sunday after it has completed.

I've temporarily stopped the 'big' sieve on all k's for Sierp base 16 to n=200K at P=450G in order to do this.

What I think I'll do is sieve all of the Riesel base 16 k's to n=200K to P=400G and then post all of those sieved files. I'll then continue on the Sierp sieving.

Gary

2007-12-26, 17:08	#46
gd_barnes May 2007 Kansas; USA 10279₁₀ Posts	Sierp base 12 and Riesel base 13 update Status from Carlos (em99010pepe): 40412^n+1 is complete to n=79.6K. He decided not to test 28813^n-1 so that one is now available. It had already been tested to n=62K and a sieved file is available in the sieving thread up to n=100K. Gary

2007-12-28, 02:57	#52
mdettweiler A Sunny Moo Aug 2007 USA (GMT-5) 1869₁₆ Posts	Status report on k=2908 for Sierpinski Base 16: Tested up to n=75810 as of this posting. I switched to Gary's provided sieve file today, since at p=400G it was sieved much deeper than my original sieving (about p=121G). Still no primes as of yet. Last fiddled with by mdettweiler on 2007-12-28 at 02:58 Reason: fixed a typo

2007-12-29, 19:45	#55
gd_barnes May 2007 Kansas; USA 24047₈ Posts	Riesel base 16 started I am reserving Riesel base 16 up to n=25K for all k's. I started on it Friday. There are 40 k's remaining at n=19K. I'll post what is remaining on Sunday after it has completed. I've temporarily stopped the 'big' sieve on all k's for Sierp base 16 to n=200K at P=450G in order to do this. What I think I'll do is sieve all of the Riesel base 16 k's to n=200K to P=400G and then post all of those sieved files. I'll then continue on the Sierp sieving. Gary

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2007-12-26, 19:51	#47
tnerual Oct 2006 7×37 Posts	326732^101924+1 is prime! Time: 51.669 sec. or 3267316^25481+1

2007-12-26, 21:10	#49
gd_barnes May 2007 Kansas; USA 19·541 Posts	Tnerual is reserving Sierp base 16 k=34543 for n=25K-100K.

2007-12-27, 20:02	#50
gd_barnes May 2007 Kansas; USA 10100000100111₂ Posts	Michaf has started and reserved Riesel base 31 and is continuing. There are currently 43 k's remaining at n=5K.

2007-12-27, 23:06	#51
gd_barnes May 2007 Kansas; USA 19·541 Posts	Reserving k=64518 for Sierp base 16 up to n=100K. This is by far the highest weight k remaining. The file is 50% larger than any other. Getting rid of it will help speed up the big sieve.

2007-12-28, 04:28	#53
gd_barnes May 2007 Kansas; USA 19·541 Posts	It didn't take long after reserving heavy-weight (relatively speaking) k=64518 for Sierp base 16. 64518*16^36998+1 is prime 53 k's remaining. That removes 9726 testing candidates from the big sieve. Much better!

2007-12-29, 18:34	#54
mdettweiler A Sunny Moo Aug 2007 USA (GMT-5) 3×2,083 Posts	Sierpinski Base 16 k=2908 status report: Now at n=83622. This is sort of a milestone because I am now in top-5000 territory, so if I find a prime, it will be reportable! Still hoping for a prime on this one before I reach n=100k and release it. It's very low weight (relatively speaking) but I'm still hoping I'll be able to knock it out.