I have squezeed as much info as I can from this thread, all results from it are recorede in database. I also found factors of missing composites (there were quite a lot prime numbers in "wide" range which were not mentioned anywhere; Uncwilly probably discovered those factors and never released the exponents; I attributed those factors to him).

"Deep" and "factors" tables now are generated automatically from the data in the database. Database can be found here: [url]http://ohmdpp.5gigs.com/db[/url]

I have also relased some new exponents at 65 bits -- an easy target for newcomers.

VBCurtis hasn't checked the boards for a long time. His email doesn't work, too. I'm releasing his exponents.


Everyone is welcome to join the project!

I have made a tutorial on using factor4: [url]http://ohmdpp.5gigs.com/factor4.shtml[/url]

Main page -- [url]http://ohmdpp.5gigs.com/[/url] -- is also updated with links to it.

I hope my email still works! Use [email]VBCurtis@gmail.com[/email].
I didn't realize I still had exponents reserved-- a few wide ranges, perhaps? I'm not sure I followed up in emailing all my results files. Which ranges are not updated yet from the ones I checked out ages ago?
I've been spending all my cycles on LLRing ranges from the 15k.org website; I haven't run anything for this project in months, though I'm happy to finish up any work I had checked out previously.

Optimal bit depth can be extended from Prime's bit depth for smaller numbers-- the idea is that we should factor to a depth that has LL testing eliminating candidates at the same rate as trial-factoring. Since 100M LL testing is VERY long, you can safely assume the optimal bit depth is higher than we're willing to go. I recall something like 84 bits for 1 billion bits, 78 to 80 for this project. I can calculate/estimate it more precisely if you wish, but any work up to at LEAST 76 is surely not wasted. If one is testing at the largest bit depth that "makes sense", s/he should find a factor about as often as an LL test would complete for a number that size. For 100 million, that's something like one found factor per [B]year[/B] on a P4-2.4 Ghz. Depressing, but this is a BIG project! At any rate, be assured depth isn't "wasted" at the level we're working at.
-Curtis

[QUOTE=VBCurtis]I hope my email still works! Use [email]VBCurtis@gmail.com[/email].[/QUOTE]

I used email from your profile: [email]vbcurtis@vb.homelinux.org[/email] and got a bounce.

[QUOTE=VBCurtis]I didn't realize I still had exponents reserved-- a few wide ranges, perhaps? I'm not sure I followed up in emailing all my results files. Which ranges are not updated yet from the ones I checked out ages ago?[/QUOTE]

I have closed all wide ranges until I finish the program to manage the data. I hope I'll have som free time on weekends. You have reserved 333100000-333199999. You can work on it, if you wish :)

[QUOTE=VBCurtis]I recall something like 84 bits for 1 billion bits, 78 to 80 for this project.[/QUOTE]

Thanks! :bow: I feel it will take lots of CPU time! :showoff:

[quote=gribozavr]I have made a tutorial on using factor4: [URL="http://ohmdpp.5gigs.com/factor4.shtml"]http://ohmdpp.5gigs.com/factor4.shtml[/URL]

Main page -- [URL="http://ohmdpp.5gigs.com/"]http://ohmdpp.5gigs.com/[/URL] -- is also updated with links to it.[/quote]

Don't forget to mention that factor4 runs in normal priority so to run it in idle mode you have to create a batch file with the following content:

start /low factor4.exe -r

Carlos

Thanks! New resume.zip uploaded.

Hi
I just wanted to check out your project, Sorry I didnt reserve this range but here are the results:

M332193431 no factor from 62.000 bits to 63.000 bits.

ok I'll do 332193431 from 63 to 65

M100,000,007
 

Has anyone found a factor of 2^100,000,007 -1? Does a known factor exist? I am trial factoring it now and so far nothing has come up. If I cannot find a factor and nobody else has either, then I will attempt a Lucas Lehmer Test on this exponent. Also, is there any way to assign yourself an exponent over 79.3M without getting "Error 3- Exponent not assigned to this computer" every time you try to submit results? 100,000,007 is the first prime exponent over 100M, so I am curious to its primality.

332193431
 

M332193431 no factor from 63.000 bits to 65.000 bits.

[QUOTE=StarQwest]Has anyone found a factor of 2^100,000,007 -1? Does a known factor exist? I am trial factoring it now and so far nothing has come up.[/QUOTE]

Take a look at this thread: [url]http://mersenneforum.org/showthread.php?t=1863[/url]. So, the range 100-105M was prefactored, but not to a high bit depth (about 50 or so). I have just tested this exponent to 2^60 and found no factor.

[QUOTE=StarQwest]If I cannot find a factor and nobody else has either, then I will attempt a Lucas Lehmer Test on this exponent. Also, is there any way to assign yourself an exponent over 79.3M without getting "Error 3- Exponent not assigned to this computer" every time you try to submit results? 100,000,007 is the first prime exponent over 100M, so I am curious to its primality.[/QUOTE]

You should use this thread (But only after TFing it to 2^76-2^78, maybe higher, see post by VBCurtis above): [url]http://mersenneforum.org/showthread.php?t=3175[/url]