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Forum: Factoring 2019-09-09, 01:32
Replies: 26
Views: 4,176
Posted By 2147483647
Smallest 10^179+c Brilliant Number (p90 * p90)

Brilliant numbers are semiprimes where both prime factors have the same number of digits.

According to this table (https://www.alpertron.com.ar/BRILLIANT.HTM), the smallest n such that the...
Forum: Factoring 2017-01-17, 06:38
Replies: 498
Views: 57,013
Posted By 2147483647
6299*2^671 + 1 P67 =...

6299*2^671 + 1

P67 = 3182396767206674365563262543432561386415000723540062526986422694521
P68 = 47860802255498443862373347905699168248032102727842291196694966442093
P72 =...
Forum: Factoring 2016-12-31, 16:22
Replies: 0
Views: 625
Posted By 2147483647
10^224 + 3 factored

Over the past 4 days I have factored 10^224 + 3 with SNFS:

10^224 + 3 = 31 * 163 * 10375177 * 2147412247 * 2626740241 * p53 * p143

where,

p53 =...
Forum: YAFU 2016-12-25, 14:06
Replies: 3
Views: 1,399
Posted By 2147483647
Inefficient behaviour in yafu when doing large NFS with lots of threads

I'm using yafu to do SNFS on some large numbers (about 200 digits) with 48 threads for sieving, and I've noticed that yafu starts 48 sievers but then doesn't start any more until all 48 have...
Forum: Factoring 2016-12-10, 08:42
Replies: 2
Views: 599
Posted By 2147483647
Interesting, thanks. I suppose these will...

Interesting, thanks. I suppose these will actually over-estimate the time for large enough numbers since the complexity of NFS is sub-exponential, but if it's a good approximation then that's fine.
...
Forum: Factoring 2016-12-10, 07:01
Replies: 2
Views: 599
Posted By 2147483647
What should the "q" value increase to for GNFS/SNFS computations?

Yesterday I started a large SNFS and I'm just wondering how long it's going to take.

I just did a C100 with SNFS and the sieving range was 510k to 590k.

What should the range look like for...
Forum: YAFU 2016-12-09, 07:59
Replies: 19
Views: 2,290
Posted By 2147483647
Ok, I tried this again but with an extra "/"...

Ok, I tried this again but with an extra "/" after the paths and I got everything compiled. msieve and yafu seemed to compile correctly too, but when I try and run them, I get this:

./msieve:...
Forum: YAFU 2016-12-06, 02:39
Replies: 19
Views: 2,290
Posted By 2147483647
./configure...

./configure --prefix=/home/b/bw113/factoring/gmp/install gives this:

error
./configure: line 25637: cannot create temp file for here-document: Input/output error
./configure: line 25637: cannot...
Forum: YAFU 2016-12-06, 00:58
Replies: 19
Views: 2,290
Posted By 2147483647
Of course that's possible, but there have been...

Of course that's possible, but there have been several members of library staff who have walked into the room while I've been using lots of computers and no one has ever told me to stop, so as far as...
Forum: YAFU 2016-12-05, 16:06
Replies: 19
Views: 2,290
Posted By 2147483647
Interesting. My current "setup" is very silly: I...

Interesting. My current "setup" is very silly: I go to my university's library in the middle of the night when no one else is using the computers, boot up 30 or so, then use a little client/server...
Forum: YAFU 2016-12-05, 15:29
Replies: 19
Views: 2,290
Posted By 2147483647
Thanks, that would be great. gcc is already...

Thanks, that would be great.

gcc is already installed and I'm pretty sure m4 is too so that shouldn't be a problem.

For the other procedure, there seem to be a lot of bugs/errors/strange things...
Forum: YAFU 2016-12-05, 12:49
Replies: 19
Views: 2,290
Posted By 2147483647
Is this possible to use without any "make...

Is this possible to use without any "make install" commands? I'm not an admin on this machine so I can't run any of them.



Just tried this but only get gmp-6.0.0/include does not exist and then...
Forum: YAFU 2016-12-05, 03:03
Replies: 19
Views: 2,290
Posted By 2147483647
The lasieve binaries are in the bin folder, but...

The lasieve binaries are in the bin folder, but there's no output from the compiler and the command runs very quickly, making me think that it just copied the binaries from...
Forum: YAFU 2016-12-04, 10:19
Replies: 19
Views: 2,290
Posted By 2147483647
I've changed this now and the first 2 stages work...

I've changed this now and the first 2 stages work (make clean and make populate_prefix) but still nothing else. The next issue seems to happen when running make lasieve_binaries, where I get this:
...
Forum: YAFU 2016-12-04, 02:32
Replies: 19
Views: 2,290
Posted By 2147483647
Building yafu on windows/linux

After trying and failing several times to build yafu, I just found this (https://bitbucket.org/kingbowser/yafu-setup-package/src). When running "make all" on windows 10, I get the following output:
...
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