Factoring database

[Andi47]

I have the impression that for very high ECM, newly queued composites seem to get the first place in the queue.

I noticed this as there is a c296 in the queue since Friday - and it's at the rear end of the queue.

What about doing very high ECM in the order of when they come in instead of in order of their size (or whatever)?

BTW: I just clicked the "run now" button for the oldest composite (which did not get any curve since March 27th, ~3 p.m.), it got ~50 curves at B1=1M before it was crowded out again.

[10metreh]

Originally Posted by Andi47

I have the impression that for very high ECM, newly queued composites seem to get the first place in the queue.

I noticed this as there is a c296 in the queue since Friday - and it's at the rear end of the queue.

What about doing very high ECM in the order of when they come in instead of in order of their size (or whatever)?

BTW: I just clicked the "run now" button for the oldest composite (which did not get any curve since March 27th, ~3 p.m.), it got ~50 curves at B1=1M before it was crowded out again.

I've noticed that C296 too, and a C197 as well. Just now I noticed that someone clicked on "run now" on the C296. If that was you, what number does it come from?

[henryzz]

Originally Posted by 10metreh

I've noticed that C296 too, and a C197 as well. Just now I noticed that someone clicked on "run now" on the C296. If that was you, what number does it come from?

http://factorization.ath.cx/search.p...46299&detail=1
look under "Is cofactor of these non-special (user-search) numbers"
it is effectively a factor of 1073*2^1073-1

[Andi47]

Originally Posted by 10metreh

I've noticed that C296 too, and a C197 as well. Just now I noticed that someone clicked on "run now" on the C296. If that was you, what number does it come from?

I did not *start* this number, but I clicked the "run now" button because it's the oldest number in the queue.

[Andi47]

BTW: The queue is growing quickly, I expect it to finish in mid-april...

[10metreh]

Originally Posted by Andi47

BTW: The queue is growing quickly, I expect it to finish in mid-april...

That's because someone has tried to extend mklasson's tables for k*2^n-1 to k=15. They have put a lot of composites from that into the very high limits queue. (It could be mklasson himself.)

Edit: And someone (probably that person) has clicked "stop" on the C95 I was working on.

I wonder: why doesn't someone make tables for 2^n+-k? I know Serge Batalov has worked on 2^n-3 (not sure about 2^n+3), but the rest are all open AFAIK.

[henryzz]

Originally Posted by 10metreh

That's because someone has tried to extend mklasson's tables for k*2^n-1 to k=15. They have put a lot of composites from that into the very high limits queue. (It could be mklasson himself.)

i didnt realize it was mklasson that owned those tables

the composites will clear out eventually

[smh]

Originally Posted by 10metreh

Edit: And someone (probably that person) has clicked "stop" on the C95 I was working on.

I didn't stop your number, but did notice one or two other number coming in after which you jumped queue

I thought you were the one that 1200 x B1=1M was to much for a c95?

[Andi47]

Originally Posted by smh

...but did notice one or two other number coming in after which you jumped queue

ALL numbers which come in newly jump the queue!


Edit: Sometimes I see numbers which have more than one p-1 run with the same bounds. The P-1 method finds a factor p in the first run iff the penultimate factor of p-1 is smaller than B1 and the largest factor of p-1 is smaller than B2. So a second run at the same (or even lower) bounds is useless.

P+1 finds a factor p if the largest two factors of p+1 "fit into" the B1 and B2 bounds. However, for reasons explained here, a p+1 run turns out actually be a p-1 run with a probability of 50%, so it does make sense to do more than one p+1 run with the same bounds.

[smh]

Originally Posted by Andi47

ALL numbers which come in newly jump the queue!

I know, but his number was in the queue already. I saw it sink to "Queued pos 2" before he pressed "run now" and jumped over the two numbers in front of him.

[10metreh]

Originally Posted by smh

I didn't stop your number, but did notice one or two other number coming in after which you jumped queue

I thought you were the one that 1200 x B1=1M was to much for a c95?

When you can fit a t35 into 1/4 of the sieving time (or less), that doesn't really apply!