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Forum: Prime Cullen Prime

2007-07-07, 13:02

Replies: 16

factors

Views: 13,638

Posted By ATH

I expanded my sieving to 1 ≤ n ≤ 25M and sieved...

I expanded my sieving to 1 ≤ n ≤ 25M and sieved up to 5.4 G with a total of 24.221.687 factors found (including all those you found in this project) + the 14 known primes leaving 778.299 (3.15%)...

Forum: Prime Cullen Prime

2007-05-31, 22:59

Replies: 16

factors

Views: 13,638

Posted By ATH

Nevermind it was a typo in database.xls altering...

Nevermind it was a typo in database.xls altering the n-value:

19698213427 is a factor of 1632341*2^1632341+1 (instead of 1624241)
8241190129247 is a factor of 1638107*2^1638107+1 (instead of...

Forum: Prime Cullen Prime

2007-05-31, 22:31

Replies: 16

factors

Views: 13,638

Posted By ATH

Thanks alot for those factors. After...

Thanks alot for those factors.

After cleaning it up and removing duplicates and only keep lowest when 2 factors to same n, I came up with factors for 1,499 cullen numbers:

primecullenprime.txt...

Forum: Prime Cullen Prime

2007-05-30, 12:26

Replies: 16

factors

Views: 13,638

Posted By ATH

ok, I won't sieve prime n's then, but continue...

ok, I won't sieve prime n's then, but continue with my big range. I might expand to 25M as well then when I hit 5G for 0-10M.

Forum: Prime Cullen Prime

2007-05-29, 20:07

Replies: 16

factors

Views: 13,638

Posted By ATH

I originally sieved cullen numbers 1 ≤ n ≤ 5M up...

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...

Forum: Prime Cullen Prime

2007-05-17, 11:52

Replies: 16

factors

Views: 13,638

Posted By ATH

sure thanks.

sure thanks.

Forum: Prime Cullen Prime

2007-05-17, 00:36

Replies: 16

factors

Views: 13,638

Posted By ATH

I'm keeping a list like that, and thats why I...

I'm keeping a list like that, and thats why I want new factors for it.

Forum: Prime Cullen Prime

2007-05-09, 23:08

Replies: 16

factors

Views: 13,638

Posted By ATH

I was just interested in the factors you found...

I was just interested in the factors you found during sieving/P-1. It doesn't matter I have to put it together from several files.

Forum: Prime Cullen Prime

2007-05-09, 13:00

Replies: 16

factors

Views: 13,638

Posted By ATH

I just kept a list of factors. I sieved all the...

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 non-prime cullen numbers at some point.

Forum: Prime Cullen Prime

2007-05-08, 13:34

Replies: 16

factors

Views: 13,638

Posted By ATH

factors

Do you save all the factors you find during sieving/P-1 in a "master" list?

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