20180131, 15:24  #628 
"Curtis"
Feb 2005
Riverside, CA
2·3·751 Posts 
This. Try some intermediate values of B1, e.g. run a day or two at B1 = 100k and see how your rate of factorsfound changes. I expect you'll find nearly as many factors, while more of them will be 28to32 digits than before. If so, go to 150k for a couple days, repeat until the rate drops off or you get bored.

20180131, 17:02  #629 
Sep 2009
2^{2}×487 Posts 
A SNFS 200 quartic is bad because the rational norm is much larger than the algebraic norm. One thing I've wondered is if it's possible to use a quadratic (degree 2) on the rational side instead of the usual linear (degree 1).
I've heard of using two quadratics for GNFS, one on each side, but I can't remember where. It wasn't competitive with the normal way though. Chris 
20180202, 03:17  #630 
Jan 2018
3×11 Posts 
Here are two more full factorizations from the t2100 file.
C532 = P32 * PRP501 http://factordb.com/index.php?id=1100000000438624599 C653 = P33 * PRP621 http://factordb.com/index.php?id=1100000000450836049 
20180204, 12:30  #631 
Sep 2010
Scandinavia
1147_{8} Posts 
t2100
31^2571 is divisible by p50.
p50 = 35890392908870171521864015727558211438952448644537 
20180205, 04:09  #632 
Jan 2018
3×11 Posts 
Here are two more full factorizations from the t2100 file:
C659 = P30 * PRP630 http://factordb.com/index.php?id=1100000000655014354 C862 = P27 * PRP836 http://factordb.com/index.php?id=1100000000685532706 
20180209, 06:01  #633 
Jan 2018
100001_{2} Posts 
I just noticed that there are now less than 65,000 composites in the t2100 file. Great work everyone!
Also, here's another full factorization from the t2100 file: C826 = P27 * PRP800 http://factordb.com/index.php?id=1100000000615521636 
20180209, 07:46  #634 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
5754_{10} Posts 
I have a bunch in a long log file if anyone wants to sort through them. My 1 curve at 1e6 run found a lot

20180209, 08:48  #635 
Oct 2007
London, UK
1,319 Posts 
Trying my hand at some GNFS:
459913866740209041331349460680262230936475470929114765151226584224482455774571483444467129409276961^31 Seems like composites around 140  150 digits should take a couple of days to a week for me. 
20180209, 10:19  #636 
Nov 2012
2^{3}×3^{2} Posts 

20180209, 13:09  #637 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
2·3·7·137 Posts 
https://www.sendspace.com/file/gd8bjo
I went through upto 555 digits above. 
20180209, 15:01  #638  
Nov 2012
2^{3}×3^{2} Posts 
Quote:


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