Tour de Primes 2017

Welcome to the 9th annual Tour de Primes. 2 is the first prime number...and the only even one. This makes it unique among prime numbers. Therefore, February is declared Prime month...being the 2nd month of the year. :) And there's no better way to pay homage to a prime number than to go out and find one. :) More precisely, a Top 5000 prime.

For the month of February, an informal competition is offered. There are no points to be gained or awards to be won...just a simple rare jersey at the end of the month to add to your badge list. No pressure or stress other than what you put on yourself. :)
 

• Red Jersey - discoverer of largest prime
• Yellow Jersey - prime count leader (tiebreaker will be prime score)
• Green Jersey - points (prime score) leader
• Polk-a-dot Jersey - on the 19th of February we'll have a "mountain" stage and award the Polk-a-dot Jersey to the one who finds the most primes on that day (tiebreaker will be prime score for that day).

In the event of the discovery of a Sophie Germain pair or twin primes, or other discoveries that find multiple primes at once, both (or all) primes shall count towards TDP totals.

Results will be available at http://www.primegrid.com/challenge/tdp_2017.php.

As with the last few years, for all primes (BOINC and PRPNet) we're using the new reporting system whereby the prime's date of discovery determines whether it's eligible for the Tour de Primes. Prior to 2014, the date of verification for BOINC primes was used while the discovery date was used for PRPNet primes. The current system is more intuitive and fairer.

Currently, the fastest opportunities to find Top 5000 primes is with the SGS (LLR), PPSE (LLR), and GFN-16 (65536) projects. Of course, should someone find a prime in the mega-prime searches, this would certainly give them a good shot at the green jersey. Not a guarantee, however, as in 2016 there were several mega primes found in the Tour de Primes. Overall, in 2016 we averaged about one mega prime per week for the entire year, so you might need more than "merely" a mega prime to take home green.

All ports in PRPNet with the possible exception of Wall-Sun-Sun and Wieferich are also available for the competition. If an actual WSS or Wieferich prime (not a near prime) is discovered, whether or not it would count for TDP depends on whether it's reportable at T5K.

To participate in BOINC SGS (LLR), PPSE (LLR), GFN-16, or any other LLR or Genefer project, all you have to do is select it in your PrimeGrid preferences. AP27 sequences are not reportable at T5K, so are not eligible for Tour de Prime.

To participate in PRPNet, please see the Welcome to PRPNet thread.

We strongly recommend disabling hyperthreading, or if that's not possible, only running 50% of your cores for LLR, PFGW, and Genefer (on a CPU). I.e., anything that can find primes on a CPU. This usually produces better overall performance as well as cooler temperatures.

Good Luck, have fun, and enjoy! :D

Well, I am thinking I will run SGS, PPSE, GFN16 and Proth Mega Prime Search LLR   Mega on my fastest overclocked sandybridge CPUs.
I think on the day for the most in one day, that day,  SGS and PPSE, maybe Gfn16.
Still on the hunt for another mega prime find.

I put my 2 GTX 1080 on GFN16 over from Folding + 4 CPU HT off.
On my Server HT off I will run  PPSE, Proth Mega Prime Search LLR
On my AMD Servers SGS and PPSE and just let them cook away then.

GFN-18 maybe worth running going for a large prime. It is GPU and CPU
 

bill1024

bcavnaugh

bill1024
Found a prime number. SGS
 
 3240418526427*2^1290000-1 (388342 digits) T5K

Watch your 6 Bill, that is all I can say for now!

I am running some PG trying to figure out what I will run in the PG TDP
The SGS put me in the 5000 list but way near the end.
46xx if I remember right. So they will be pushed out in no time.
Will have to look for bigger primes.

 
So have I for the last few Days, No Primes found but test what works best together as this I think is the Only GPU & CPU Event.

Yeah I found that Mega prime running  Proth Mega Prime Search LLR (MEGA)

FYI
The link below shows each Subproject and also the (digits long) for a Prime if you happen to find one.
http://www.primegrid.com/server_status_subprojects.php
 
The below are the Primes I am looking for over this Event.
Proth Mega Prime Search  (1,008,560 digits long)
Generalized Fermat Prime Search - n=17 (131072) Mega (1,002,573 digits long)

I'm down for this 

Had a few PC failures, basically everything except my decade old i5 machine. But I am back and with a vengeance! Just finished building my new rig and it's a doozy!
 

 
 
My new dual Xeon 2680 setup  
 
Can't wait to stress test the hell out of this thing!

According to PG "To participate in BOINC SGS (LLR), PPSE (LLR), GFN-16, or any other LLR or Genefer project, all you have to do is select it in your PrimeGrid preferences. AP27 sequences are not reportable at T5K, so are not eligible for Tour de Prime."
 
But anything below GFN-16 won't make the T5K so not sure why they said that.
 
Personally I think the best bets for T5K on CPU are Sophie Germain Prime Search LLR (SGS) and Proth Mega Prime Search LLR (MEGA). And then Generalized Fermat Prime Search n=17, b>=42,597,774 (GFN-17-Mega or Genefer 131072 Mega) for GPU. 

is SGS still producing top 5k? I haven't gotten any since last year (2 of those were in the last tour de primes)

devlin85
I'm down for this 

Had a few PC failures, basically everything except my decade old i5 machine. But I am back and with a vengeance! Just finished building my new rig and it's a doozy!
 

 
 
My new dual Xeon 2680 setup  
 
Can't wait to stress test the hell out of this thing!

Nice rig and good luck stressing it.
 
I'll be looking for primes too, it's been a few years since I found one.

devlin85
I'm down for this 

Had a few PC failures, basically everything except my decade old i5 machine. But I am back and with a vengeance! Just finished building my new rig and it's a doozy!
 

 
 
My new dual Xeon 2680 setup  
 
Can't wait to stress test the hell out of this thing!

 Congrats!  Looks sweet.

T-minus 6 hours 15 minutes: everybody clear their cache, set their projects, and disable hyper threading if possible. It's time to rock this s***! 

This is underway. Good luck everyone.
Now go and find some prime numbers!

Good Luck Team