Leyland Primes (x^y+y^x primes)

[kruoli]

Yes, directed at you and Norman, I meant if one of you is able to put that data into some kind of table that can be displayed publically.

[kar_bon]

There's already a page with some old ranges, a graph and just only 1814 numbers with many data and links to FactorDB.

[xilman]

Originally Posted by kruoli

Yes, directed at you and Norman, I meant if one of you is able to put that data into some kind of table that can be displayed publically.

I could, in principle, rehome and update the XYYXF pages of Andrey.

In practice, it would require quite a bit of on-going help from others.

[swellman]

Originally Posted by xilman

I could, in principle, rehome and update the XYYXF pages of Andrey.

In practice, it would require quite a bit of on-going help from others.

I’m willing to lend a hand on the XYYXF effort, though I’m not a coder. I have maintained a list of remaining composites for the 1 < y < x < 151 side of things, as well as ECM performed to date.

A reservation system would be useful but perhaps that’s a bridge too far.

If you’re only leaning towards the prps/primes side, I willing to help of course but I’ve had zero involvement to date.

[storm5510]

Originally Posted by kruoli

Yes, directed at you and Norman, I meant if one of you is able to put that data into some kind of table that can be displayed publically.

I deleted everything, what little there was, and yes, this has all been off-topic.

Originally Posted by VBCurtis

Thing is, you *don't* have a grasp how to do it. Without sieving, the task is hopeless.

You are correct about the sieving part. I don't. Riesel, yes, because it is one fixed number and not a range.

This will be my last here.

[pxp]

Originally Posted by kruoli

Yes, directed at you and Norman, I meant if one of you is able to put that data into some kind of table that can be displayed publically.

All of my data has had a table since April 2015 and I've posted the link here many times, most recently earlier today (my post at the top of Page 50). For those of you determined to order the items by (x,y) instead of my absolute magnitude, this is not what you want. I do however have an html version that allows one to sort columns (which is only useful for a couple of columns) so that by clicking on the x header, one gets (I think) the ordering of Kulsha's original table. I don't update this version as often as the other one (although I did just now) because I have to make a handful of awkward text replacements to correct issues with the original html file that was created by the script working on my txt file.

[kruoli]

This is a table that I know of; I might miss the cues on how to determine untested ranges?

[pxp]

Originally Posted by kruoli

This is a table that I know of; I might miss the cues on how to determine untested ranges?

I had mentioned that I believe that all Leyland primes/PRPs less than 150000 digits are known. This implies that all (x,y) for x<33180 are known.

[Uncwilly]

Originally Posted by storm5510

She's asking me to do it because I have a grasp how to do it. I have no problem with the ask.

Despite what the avatar and username might be, Sweety has stated that he is a guy.

[storm5510]

Originally Posted by Uncwilly

Despite what the avatar and username might be, Sweety has stated that he is a guy.

I suspected as much. Perhaps an ten-foot-tall sasquatch from Alaska.

[storm5510]

Just for the record, I was able to get xyyxsievecl to run, like so:

xyyxsievecl -p3 -P5000 -x3 -X10000 -y3 -Y10000 -s- -M3200 -W2 -oresults.txt

The above produced an ABC file with over 3.3 million terms in 72 seconds. It didn't work my 2080 all that hard after I raised the -M parameter to 3,200 and added -W2. It would not start at the default of 800 for -M. I put the above in a batch file. It doesn't seem to want to run from an input file. I will learn more with some experimentation. I was able to do this by recalling my memories of sieving Riesel candidates.