factors
Do you save all the factors you find during sieving/P1 in a "master" list?

No, but in a master directory. There are stored all the incoming files, with filenames in a comprehensible format. Then, the smallset factors are imported into an Excelspreadsheed,:blush: and treated afterwards to build the files.
Anybody who wants the factors can have them, but be aware that they come in three different formats, from Multisieve, gcwsieve and prime95, so treating them will require some manual work. What was the purpose of your question exactly? H. 
I just kept a list of factors. I sieved all the cullen numbers 1 to 5M to 2.5G originally and might continue sieving the nonprime cullen numbers at some point.

Just tell me what you need/want, and you get it. H.

I was just interested in the factors you found during sieving/P1. It doesn't matter I have to put it together from several files.

I also think it would be good to have a list of factors available for download somewhere.
A list of the smallest known factor for each Cullen composite (not just those with prime exponent) might be of some interest to researchers in itself. 
I'm keeping a list like that, and thats why I want new factors for it.

I will post every factor as well as the list with the smallest factor known once sieving is finished, so latest in about a month. OK?
Yours H. 
sure thanks.

I originally sieved cullen numbers 1 ≤ n ≤ 5M up to 2.5G. Now I expanded to 1 ≤ n ≤ 10M and sieved up to 4G so far.
I also added a few of your factors that you posted in sieve reservation thread and will add rest when they are posted. I currently have 9,693,872 factors plus the 14 known cullen primes, so 306,128 without factors. In my list the 14 cullen primes have PRIME instead of factor and the 306,128 unknowns just have the TAB after the nvalue and nothing more. [URL="http://www.hoegge.dk/mersenne/cullenfactors.zip"]cullenfactors.zip[/URL] (33.4 Mb) I plan to sieve up to 5G in the next days, and then possibly sieve the prime n's only for 5M ≤ n ≤ 10M for your next range. 
1 Attachment(s)
My cullen factors.

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