How do we verify Factoring Work?

E_tron · 2003-12-09, 22:50

I know that we double check our LL testing work, but do we check our Factoring work?

Is it done by the server?

For Example, a machine returns results saying that 24,000,xxx can be divided by 429473028430320324. Does the server actually verify the result?

Uncwilly · 2003-12-09, 23:32

Yes. According to our gurus, it does. Apparently it is fast.

wblipp · 2003-12-10, 00:09

Quote:

Originally posted by Uncwilly
Yes. According to our gurus, it does. Apparently it is fast.

You can verify these in Excel and see how fast it is by downloading the Excel ZZmath Addin. On a recent thread in LMH, Wolf reported these two factors:

M34527061 has a factor: 2730132808164814607
M34527061 has a factor: 2467611803533892129

To check if these are really factors, check these ZZmath functions evaluate to "1"

=ZPowMod(2,"34527061","2730132808164814607")
=ZPowMod(2,"34527061","2467611803533892129")

William

Complex33 · 2003-12-10, 01:30

The server checks all factors upon their submission. As a backup GP2 checks the entire known factors database roughly once a week when it is updated to validate the factoring data.

GP2 · 2003-12-10, 05:08

If you have a Unix or Linux box, you can verify the factors yourself using the program in this thread:
http://www.mersenneforum.org/showthr...&threadid=1346

2003-12-09, 22:50	#1
E_tron Sep 2002 Austin, TX 3×11×17 Posts	How do we verify Factoring Work? I know that we double check our LL testing work, but do we check our Factoring work? Is it done by the server? For Example, a machine returns results saying that 24,000,xxx can be divided by 429473028430320324. Does the server actually verify the result?

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2003-12-09, 23:32	#2
Uncwilly 6809 > 6502 """"""""""""""""""" Aug 2003 101×103 Posts 9784₁₀ Posts	Yes. According to our gurus, it does. Apparently it is fast.

2003-12-10, 01:30	#4
Complex33 Aug 2002 Texas 10011011₂ Posts	The server checks all factors upon their submission. As a backup GP2 checks the entire known factors database roughly once a week when it is updated to validate the factoring data.

2003-12-10, 05:08	#5
GP2 Sep 2003 5·11·47 Posts	If you have a Unix or Linux box, you can verify the factors yourself using the program in this thread: http://www.mersenneforum.org/showthr...&threadid=1346