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Message boards : 321 Prime Search : 32+1

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John
Honorary cruncher

Joined: 21 Feb 06
Posts: 2876
ID: 2449
Credit: 2,681,934
RAC: 0

Message 9395 - Posted: 30 Jun 2008 | 3:56:28 UTC

The first work for 32+1 has been inserted. Here are some details:

• sieved to p=600T; ongoing
• 206556 total candidates
• 28834 candidates up to n=700K soon to be completed in LLRNet
• 177722 candidates remaining for BOINC; however, we continue to sieve so this will decrease
• first work inserted 700K<n<1.5M (33175 candidates)
• ~41K candidates per 1M range of n
• status can be monitored here: 321 Range Statistics

Known primes in our workfile are at n=709968, 801978, 916773, 1832496, 2145353, 2478785. We hope to find at least 2-3 new primes below n=5M with one being a Mega Prime!

Good Luck and thank you for participating! :)

____________

Lennart SM5YMT
Honorary cruncher

Joined: 7 May 07
Posts: 1125
ID: 7989
Credit: 694,692,344
RAC: 0

Message 9397 - Posted: 30 Jun 2008 | 9:57:31 UTC

And here you have some FFT jump that increase time to crunch them.

3*2^940140+1 is not prime. Proth RES64: B51F367FB47174FB Time: 886.150 sec.
3*2^960056+1 is not prime. Proth RES64: 584960BA3E2D3F48 Time: 1210.201 sec.

3*2^1250130+1 is not prime. Proth RES64: D54C4F3C37408200 Time: 1549.778 sec.
3*2^1300020+1 is not prime. Proth RES64: A81E3D92F2A534D2 Time: 2688.669 sec.

3*2^1850082+1 is not prime. Proth RES64: 817A379E113AC7C4 Time: 3856.289 sec.
3*2^1900032+1 is not prime. Proth RES64: E8FDD29CA007A32D Time: 5156.246 sec.

3*2^2500020+1 is not prime. Proth RES64: 86F0AA6EC819C59E Time: 6711.194 sec.
3*2^2601234+1 is not prime. Proth RES64: BE5A484D83C37872 Time: 10604.602 sec.

This is done on a C2Q 2,4Ghz

/Lennart

pschoefer
Volunteer developer
Volunteer tester

Joined: 20 Sep 05
Posts: 652
ID: 845
Credit: 1,755,095,958
RAC: 19,640

Message 14090 - Posted: 2 Mar 2009 | 16:53:16 UTC - in response to Message 9395.

Known primes in our workfile are at n=709968, 801978, 916773, 1832496, 2145353, 2478785. We hope to find at least 2-3 new primes below n=5M with one being a Mega Prime!

Today the last WU with n<5M was finished and only one new prime was found (n=2291610), no Mega Prime. :|

Let's hope that we have more luck now at n>5M. At least the next prime will definitely be a Mega Prime. ;)
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Message boards : 321 Prime Search : 32+1