Pascal's OPN roadblock files

[VBCurtis]

Originally Posted by hyramgraff

Question:

What's a good upper limit for running ECM on smaller composites? 45 digits for n <= 139? 50 digits for C140 <= n <= C159? 55 digits for C160 <= n <= 179?

0.31 * GNFS input size. So C150 gets 150 * 0.31 = 46.5 digits of ECM. I treat 47 digits at 2 * t45, 48 as half a t50, etc.

[RichD]

I am reserving the more than a dozen numbers of the form p^37-1 from the MWRB file where 56662 < p < 63824. These are all SNFS-176 & SNFS-177 difficulty. There are still quite a few below SNFS-190 if others want to join in.

[Brownfox]

I am already doing 63823^37-1. Any chance you can skip that one?

[RichD]

Originally Posted by Brownfox

I am already doing 63823^37-1. Any chance you can skip that one?

Sure, not a problem. I haven't started that one. I will remove it from my list.
Let me know if you want another one or two. I am working from the bottom of the list.

[Brownfox]

Originally Posted by RichD

Sure, not a problem. I haven't started that one. I will remove it from my list.
Let me know if you want another one or two. I am working from the bottom of the list.

Thank you. I'll let you know if I need another one.

[Brownfox]

63823^37-1 factored. Moving on to 1371890521^19-1 as no-one seems to have reserved this yet.

[RichD]

I still have a few left in my group to finish up but identified another group to work. These are a little tougher (SNFS mid-190s). Reserving:

49613^41
49789^41
49891^41
51431^41
51973^41
52259^41

[Brownfox]

Reserving 13697^43-1 and 13757^43-1.


According to my calculations those are the last with SNFS difficulty below 180 digits

[MisterBitcoin]

Is there any list (on FDB or elsewhere) which lists the following:


-lowest p´s not fully factored for p^11-1
-numbers of form p^11-1 recieved enough ECM to start SNFS


A huge amount of numbers from that form is in FDB, i´d like to sort them and prepair them for SNFS.

For p<1.000.000.000 all numbers should be FF (1B is 99dd). But what about 1B-10B? I noticed some numbers with that form on 105 digits, they had p=11 digits.



Anyway I started on C165, but starting with the lowest p´s without factors make much more sense.

[hyramgraff]

Originally Posted by MisterBitcoin

Is there any list (on FDB or elsewhere) which lists the following:


-lowest p´s not fully factored for p^11-1
-numbers of form p^11-1 recieved enough ECM to start SNFS


A huge amount of numbers from that form is in FDB, i´d like to sort them and prepair them for SNFS.

For p<1.000.000.000 all numbers should be FF (1B is 99dd). But what about 1B-10B? I noticed some numbers with that form on 105 digits, they had p=11 digits.



Anyway I started on C165, but starting with the lowest p´s without factors make much more sense.

There isn't much documentation about how much ECM work has been done for any given number. I've been posting my progress but I think I'm the only one doing ECM work on numbers without a plan to also run SNFS or GNFS factoring.

Since you're asking about numbers that are ready for SNFS I thought I should mention that just last week I finished running 45 digit ECM on all of the C130-C139 numbers in this version of the t2100 file. I believe that they are now ready for SNFS.

[RichD]

Reserving a few more.

26251^41-1
52511^41-1
53093^41-1