Riesel base 58
 

53328*58^18042-1
76194*58^18191-1
23958*58^18360-1
97587*58^18439-1
79422*58^18582-1
4341*58^18703-1

Completed to 19000 and continuing. I had found a prime for some of the k, so you can ignore those.

Riesel base 87 is complete to n=25K; 15 k's remain; unreserved.

Sierp base 80 is at n=22K; 23 k's remain; continuing to n=25K.

Now working on Riesel base 75 from n=10K-25K.

@ All:

I am unreserving my hundreds of Riesel reservations, since my computers is now guarenteed to be busy while on vacation, to someone else.

Regarding Sierp base 63, it appears that the 37% reduction is permanent, which should leave ~81112 candidates remaining at n=5000. If RAM allows it, I will conduct a sieving of the n=5001 to n=131072 (2^17) range, else I will get back with an update on how much I'm going to sieve. Also I don't thinkt that I will test further than n=25K, but if I decide to go beyond n=25K I will also get back on that case :smile:

Regards

Kenneth

Riesel base 75 is at n=16K; 16 k's remain; continuing to n=25K.
[Only one prime found since n=10K.]

Sierp base 80 is complete to n=25K; 23 k's remain; unreserved.

I'm now starting on Sierp base 81.

New reservation: Riesel base 95 for n=10K-25K.

In addition to Riesel base 75 and Sierp base 81 to complete, this leaves the following bases yet to be started on:

Riesel bases 46 and 95 for n=10K-25K.
Sierp bases 46, 61, and 88 up to n=25K.

I'm slowly but surely bringing the "reasonable" bases <= 100 on both sides up to n=25K.


Gary

Do you have any plans already for when you've finished with this effort?

I'm not sure what you're asking. I'll guess with two answers:

1. No, I'm not sure when I will complete the effort. It's just running on 2 slow laptop cores. The bases take widely varying amounts of time. I will say that it will take a couple of months unless I throw a couple of high-speed quad cores at it.

2. No, I don't have any plans for what I will do after I complete that effort. The two slow cores work on various misc. tasks.


Gary

[quote=gd_barnes;172215]
I'm slowly but surely bringing the "reasonable" bases <= 100 on both sides up to n=25K.

Gary[/quote]

I thought this was your goal, but I guess you are planning to go much further.
I'm just asking because I have some kind of reservation system in mind for k's/bases for crus which I'm planning to make after I've finished renovating my house.

[quote=MrOzzy;172243]I thought this was your goal, but I guess you are planning to go much further.
I'm just asking because I have some kind of reservation system in mind for k's/bases for crus which I'm planning to make after I've finished renovating my house.[/quote]

??

No I'm not planning to go much further than the bases shown as remaining reservations in my last post. My 2 cores are just slow and they don't run all of the time. :-)

Feel free to reserve whatever you want. If you'd like a couple of the bases that I have reserved but not started on as shown in the last status post then go right ahead. None of them are very big because the machine is slow. The Riesel bases are already at n=10K. The Sierp bases have been tested to varying amounts. If you take base 46, I'd suggest doing both Riesel and Sierp since they can be sieved together. That is the biggest reservation left remaining.

The Sierp side needs a lot more work than the Riesel side.


Gary

How is it possible to Sieve R and S together?

Riesel Base 58
 

85863*58^19006-1
74859*58^19045-1
79578*58^19258-1
92100*58^19783-1
39447*58^19798-1
75314*58^19961-1

Completed to 20000 and continuing

For the same base, srsieve and sr2sieve handle both forms k*b^n+1 and k*b^n-1 mixed within the same sieve. I haven't tried it but for the same base, it appears that srsieve can additionaly handle any c-value within the same sieve for the forms k*b^n+c and k*b^n-c. At least that is what the help file seems to imply.

I too didn't realize this until about 3 months ago. It's why I reserved both Riesel and Sierp bases 22 and 28. I was able to sieve both sides within the same sieve, gaining a large amount of efficiency. I think Cruelty did the same thing for base 10.