bcp19


August 01, 2013, 10:54:33 AM 

I'm not a mathemetician but my understanding is that
A) There's essentially an unlimited number of primes. Even when youre talking numbers hundreds of digits long, yoiu'll still find primes in them pretty regularly (every couple hundred digits or so).
B) Primecoin isn't even trying to find the biggest primes out there  indeed if it was and did, Sonny would qualify for some pretty big reward money
I have a feeling that the biggest primes are safe since the top 10 are all Mersenne Primes found by GIMPS. Primecoin has helped find record Cunningham primes in the 120160 digit length, GIMPS' record is something like 17 million digits. The next reward from EFF is for a 100,000,000+ digit prime ($100,000) and a 1,000,000,000+ digit prime ($150,000).

I do not suffer fools gladly... "Captain! We're surrounded!" I embrace my inner KoolAid.





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Aggrophobia
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August 01, 2013, 11:18:30 AM 

I'm not a mathemetician but my understanding is that
A) There's essentially an unlimited number of primes. Even when youre talking numbers hundreds of digits long, yoiu'll still find primes in them pretty regularly (every couple hundred digits or so).
B) Primecoin isn't even trying to find the biggest primes out there  indeed if it was and did, Sonny would qualify for some pretty big reward money
I have a feeling that the biggest primes are safe since the top 10 are all Mersenne Primes found by GIMPS. Primecoin has helped find record Cunningham primes in the 120160 digit length, GIMPS' record is something like 17 million digits. The next reward from EFF is for a 100,000,000+ digit prime ($100,000) and a 1,000,000,000+ digit prime ($150,000). means (2^332.xxx.xxx)1 , to confirm that a number this large is prime with LL would need 2000 hours with a GTX Titan or 3400 hours with an 8core CPU now you have to see that the chance to find a Mersenne Prime in that range is 1 : 370000 (many candidates are proven composite with trialfactoring) so normally it would need ~168.000 years for one person to find a 100,000,000+ digit prime, try your luck




Stinky_Pete


August 01, 2013, 11:22:10 AM 

Primecoin isn't trying to find all primes, even small ones. It is looking for Cunningham chains (and, no, I don't know what they are either)




bcp19


August 01, 2013, 11:35:47 AM 

I'm not a mathemetician but my understanding is that
A) There's essentially an unlimited number of primes. Even when youre talking numbers hundreds of digits long, yoiu'll still find primes in them pretty regularly (every couple hundred digits or so).
B) Primecoin isn't even trying to find the biggest primes out there  indeed if it was and did, Sonny would qualify for some pretty big reward money
I have a feeling that the biggest primes are safe since the top 10 are all Mersenne Primes found by GIMPS. Primecoin has helped find record Cunningham primes in the 120160 digit length, GIMPS' record is something like 17 million digits. The next reward from EFF is for a 100,000,000+ digit prime ($100,000) and a 1,000,000,000+ digit prime ($150,000). means (2^332.xxx.xxx)1 , to confirm that a number this large is prime with LL would need 2000 hours with a GTX Titan or 3400 hours with an 8core CPU now you have to see that the chance to find a Mersenne Prime in that range is 1 : 370000 (many candidates are proven composite with trialfactoring) so normally it would need ~168.000 years for one person to find a 100,000,000+ digit prime, try your luck I used 2 cores of an i5 2500k on such a number and it took over 200 days to complete. Using an 8 core CPU would be a huge power waste for very little speed gain. The P95 program is very efficient, so memory bandwidth becomes an issue. In addition, each iteration depends on the one prior, so parallelation is impossible. IIRC, on my 2500k, using a single core would run at 144ms per iteration, 2 cores at 75ms, 3 cores at 60ms and all 4 core 55ms. VERY inefficient with multiple cores.

I do not suffer fools gladly... "Captain! We're surrounded!" I embrace my inner KoolAid.



mustyoshi


August 01, 2013, 12:08:20 PM 

ypool is basically finding all the blocks at this point.




eule


August 01, 2013, 12:10:07 PM 

I wish they'd release their code soon.




sumantso
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August 01, 2013, 12:11:48 PM 

ypool is basically finding all the blocks at this point.
Just my luck. Was getting nothing soloing and then joined the pool and bam  found a block (92113). Should have just kept soloing a bit more




bitdraw


August 01, 2013, 12:16:43 PM 

ypool is basically finding all the blocks at this point.
some friends and i still find blocks solo mining, everything is fine




dreamwatcher
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August 01, 2013, 12:48:04 PM 

http://cryptocoinexplorer2.com:5555/I have put up a live alpha/beta of Explorer III. This is a PrimeCoin Explorer. At this stage only the basic explorer is online, none of the extra features are active yet. Search function is not implemented yet, however the URL scheme is simple, and searching by hand quite easy. There are a couple of known bugs  for example the transactions on some blocks do not show correctly. Spent output field in the transaction page is not implemented yet This is strictly a testing stage, so expect the explorer to be up and down as bugs are fixed and features are added.Main CCE Explorer III update thread: https://bitcointalk.org/index.php?topic=262539.0





tinnvec
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August 01, 2013, 04:07:55 PM 

I wish they'd release their code soon. The source code is available on ypool's page, as well as the source code for the unofficial jhPrimeminer in a thread here on bitcointalk






yourofl10


August 01, 2013, 08:32:42 PM 

How does one compile this with CFLAGS? Is this right?: make f makefile.unix CFLAGS="march=natice O3"





mikaelh


August 01, 2013, 09:01:55 PM 

You should set CXXFLAGS like this: make f makefile.unix CXXFLAGS="march=native O3"




yourofl10


August 01, 2013, 09:04:13 PM 

You should set CXXFLAGS like this: make f makefile.unix CXXFLAGS="march=native O3" Ah thanks, I'll try that. Did you see my other question above by any chance?




yourofl10


August 01, 2013, 09:09:58 PM 

Actually my usual line is CXXFLAGS="O3 march=native" BDB_LIB_SUFFIX=4.8 BDB_INCLUDE_PATH=/usr/include/db4.8 make f makefile.unix
Though you can probably pass environment variables to make the way you did. I'm using CXXFLAGS because it's C++. To check it's working, look for the O3 march=native in the commands make outputs.
Here's what I got: Building LevelDB ... make[1]: Entering directory `/root/quark/src/leveldb' g++ march=native O3 I. I./include fnobuiltinmemcmp pthread DOS_LINUX D LEVELDB_PLATFORM_POSIX O2 pthread Wall Wextra Wformat Wformatsecurity Wn ounusedparameter g DBOOST_SPIRIT_THREADSAFE D_FILE_OFFSET_BITS=64 I/root/q uark/src I/root/quark/src/obj DUSE_UPNP=0 DUSE_IPV6=1 I/root/quark/src/level db/include I/root/quark/src/leveldb/helpers DHAVE_BUILD_INFO fnostackprotec tor fstackprotectorall Wstackprotector D_FORTIFY_SOURCE=2 march=native O 3 c db/builder.cc o db/builder.o db/builder.cc:1:0: error: CPU you selected does not support x8664 instruction s et make[1]: *** [db/builder.o] Error 1 make[1]: Leaving directory `/root/quark/src/leveldb' make: *** [leveldb/libleveldb.a] Error 2 I'm trying to compile this on a different alt coin, and I remember a guide for Primecoin where you can compile it with these CFLAGS so I thought it would work on other other coin as well. Thanks for the help thus far.




eule


August 01, 2013, 09:14:56 PM 

I wish they'd release their code soon. The source code is available on ypool's page, as well as the source code for the unofficial jhPrimeminer in a thread here on bitcointalk Was talking about the pool code. I'd love a p2pool, if that's possible at all.




Lauda
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Terminated.


August 01, 2013, 09:53:55 PM 

Interesting reads on this thread, it takes only forever to read everything

"The Times 03/Jan/2009 Chancellor on brink of second bailout for banks" 😼 Bitcoin Core ( onion)



