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-   -   K=13236795 Status Post (https://www.mersenneforum.org/showthread.php?t=3705)

ValerieVonck 2005-01-21 05:31

I will sieve from 164000 to 220000. Is this ok?

Kosmaj 2005-01-22 05:32

Better go at least to 340k, that's one of the "milestones" where LLR exe times (and FFT lengths used) become longer. If you want to find a 100k-digit prime then sieve to 425k. Also note that the bottom limit of reportable primes is currently at about 180k.

ValerieVonck 2005-01-22 13:04

[QUOTE=Kosmaj]Better go at least to 340k, that's one of the "milestones" where LLR exe times (and FFT lengths used) become longer. If you want to find a 100k-digit prime then sieve to 425k. Also note that the bottom limit of reportable primes is currently at about 180k.[/QUOTE]

Kosmaj,

I am currently testing the following ranges:

164K to 220K => sieved + llring
220K to 500K => currently sieving

Are there "better" (faster) sieving programs then NewPgen?

ValerieVonck 2005-01-29 07:07

164K -> 220K 45% complete - 1 prime found (50.000 digits)

Jwb52z 2005-01-29 17:22

Cedric, if you could list the prime itself, it would be nice.

ValerieVonck 2005-02-03 08:29

[QUOTE=Jwb52z]Cedric, if you could list the prime itself, it would be nice.[/QUOTE]

13236795*2^167188-1 50000+ digits
13236795*2^199020-1 59919 digits -> on the primepages
13236795*2^199516-1 60068 digits -> on the primepages

I will show this time the primes I have found.
From now on, I only list the primes I have found on the "Post your primes you have found" pages

Currently resieving the range 220000 through 500000 with Proth 0.42
Found 3000+ factors wich NewPGen initially not found
Therefore I created my own Riesel.dat file

[code]
1
220000
500000
k=13236795
<factors of input file of NewPGen>
...
[/code]

I then stripped the CR of this file

Regards

Jwb52z 2005-02-03 09:29

Thank you Cedric, but you're right. They should be posted there. I forgot about cross posting.

ValerieVonck 2005-02-03 20:23

No problem!

ValerieVonck 2005-02-08 18:00

13236795 done to 220k. 4 primes found
Now currently sieving to 500k.
I will take this K to 1 million. :coffee:

ValerieVonck 2005-02-13 17:47

K=13236795 Status Post
 
For not soiling the "I'd like to help out" thread,
I open a seperate thread wich will contain info about my progress of this K.

Moderators, if it is possible please move all the reply's in the "I'd like to help out" thread to here.

Update
[code]
: stopped sieving of 13236795 of the range 220k => 500k
: started llr'ing this range => 18.000 candidates left (of the 280K potentials)
: continuing sieving of the 500K => 1M range
[/code]

Primes found so far:

[code]
13236795*2^167188-1 is prime! 50000+ digits
13236795*2^199020-1 is prime! 59919 digits
13236795*2^199516-1 is prime! 60068 digits
13236795*2^215582-1 is prime! 64904 digits
[/code]

ValerieVonck 2005-02-15 17:49

Currently resieving the range 231k => 1 Million.
This range spans approximately 101.000 tests.
Did LLR from 220k => 231 (744 tests).
So llr'ing _all_ these test would take a long time.
So lets say 1000 test each 2-3 days * 100 = 200 ~ 300 days of crunch time (12 of the 24 hours) :w00t: :w00t: :w00t:

So hopefully with sieving this range to 1 T or more?? I'll get this range to about 50.000 (or less) potential candidates.

Regards,


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