The Original 'Ode To Joy' thread

[NBtarheel_33]

Originally Posted by ckdo

I'm currently trial factoring exponents to their intended depth which have been LL tested already.

Last night I found a 65-bit factor for M29106437, intended to be trial factored to 66 bits but only trial factored to 64 by the original assignees and then LL tested.

"What assignees?", you wonder? - Their primenesses, Cooper & Boone...

Hmm, that's interesting. I thought that PrimeNet didn't issue LL assignments until they were factored to at least the recommended bit depth.

[petrw1]

Originally Posted by petrw1

Work units completed: 1000 (in the last 365 days)

Not bad for a PIII 866.
Actually The first of these 1000 was from 3 days ago.

Hey, I can't help it if v5 chose to give me "TF-LMH to low limits" assignments.

P.S. 51 factors found.

One PC
24 hours
715 TF-LMH
38 factors
0.6214 GHz days

[cheesehead]

Originally Posted by NBtarheel_33

I thought that PrimeNet didn't issue LL assignments until they were factored to at least the recommended bit depth.

No, any LL assignment implicitly includes a preliminary TF to the recommended depth and/or P-1 if such has not yet been performed according to the assignment line. Prime95 has always had the feature of performing that preliminary TF and P-1 (since P-1 was added, that is) before the LL, if either appeared necessary.

Perhaps v5 PrimeNet will try not to assign LLs unless the recommended factor-hunting has been completed, but it will always be a good idea for Prime95 not to assume that for any LL assignment it processes.

Also, we wouldn't want PrimeNet to be unable to assign LL tests just because no unassigned exponent had yet had the recommended amount of preliminary factor-hunting done!

- - -

A complicating factor: because the TF limits have been changed occasionally, but are hardcoded into Prime95, a particular user's copy of Prime95 may not specify the same bit limit as the current PrimeNet considers sufficient. So, PrimeNet may hand out what it thinks is a fully-TFed exponent, but the Prime95 that processes it may think another bit level of TF is needed.

[petrw1]

!!!

[Nelson]

Found my first factor ever having started factoring specifically after moving to V5 in October 2008. Especially gratifying as none of my LL tests had found factors which is probably why they were LL assignments in the first place.

 
Exponent Status Data 58296919 Factored 128790384833224738577

[petrw1]

Q9550
4GB DDR2-1066 RAM
Vista 64

Up and running today.
Submitted my first benchmark.

[jrk]

The ECM status page is one line shorter.

ECM found a factor in curve #108, stage #2
Sigma=2158414569035441, B1=1000000, B2=100000000.
UID: jaysonking/atlas, M21031 has a factor: 553446583434952512256595817890899601

36 decimal digits, 119 bits and it's prime. My biggest one yet!

[markr]

Originally Posted by jrk

UID: jaysonking/atlas, M21031 has a factor: 553446583434952512256595817890899601

36 decimal digits, 119 bits and it's prime. My biggest one yet!

Congratulations - a very nice find!

[kayjongsma]

I found my first factor!

exponent:102755831
factor: 1078993817266112233

[petrw1]

First official P-1 assignment completed.

[jrk]

Holy factors, Batman!

ECM found a factor in curve #123, stage #2
Sigma=8732619929619593, B1=3000000, B2=300000000.
UID: jaysonking/atlas, M14251 has a factor: 17310493215353952134541124655739102904399

41 digits this time
(sorry for spamming...)