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-   -   Reserved for MF - Sequence 3408 (https://www.mersenneforum.org/showthread.php?t=18421)

 RichD 2013-12-13 02:40

Using B1=11000000, B2=35133391030, polynomial Dickson(12), sigma=131464569
Step 1 took 26024ms
Step 2 took 9105ms
********** Factor found in step 2: 398413318311513194323484487222582069590903
Found probable prime factor of 42 digits: 398413318311513194323484487222582069590903
Probable prime cofactor 914332613979071051490838614360427112207197925722146996639273688105220025369135909101272868081326035549029397651096001 has 117 digits

 Jayder 2013-12-13 06:35

Nice! :smile:

Anybody done/doing any work on the [URL="http://factordb.com/index.php?id=1100000000639764767"]C133[/URL]?

 RichD 2013-12-13 13:35

[QUOTE=Jayder;361962]Anybody done/doing any work on the [URL="http://factordb.com/index.php?id=1100000000639764767"]C133[/URL]?[/QUOTE]

No factor for:
5e9 -pm1
400 @ 3e6
4000 @ 11e6
50 @ 43e6

Ready for NFS if anybody wants it.

 prgamma10 2013-12-14 11:04

[QUOTE=RichD;361980]No factor for:
5e9 -pm1
400 @ 3e6
4000 @ 11e6
50 @ 43e6

Ready for NFS if anybody wants it.[/QUOTE]
I will run GNFS on this number.

 prgamma10 2013-12-17 01:54

[QUOTE=prgamma10;362038]I will run GNFS on this number.[/QUOTE]
c133 = p65 * p68.
Now a [URL="http://factordb.com/index.php?id=1100000000640227415"]c144[/URL]. (running t35...)

 prgamma10 2013-12-17 11:57

Starting 4000 curves at 3e7 (for the [URL="http://factordb.com/index.php?id=1100000000640314791"]c148[/URL]).

 RichD 2013-12-17 17:33

c148

900 @ 11e6 - no factor
(running to 2000)

 RichD 2013-12-17 18:58

[QUOTE=prgamma10;362270]Starting 4000 curves at 3e7 (for the [URL="http://factordb.com/index.php?id=1100000000640314791"]c148[/URL]).[/QUOTE]

Mis-read this post as 3e6. I stopped after 1600 @ 11e6.
I'll run 100 @ 11e7 - just for grins.

 RichD 2013-12-17 21:05

[QUOTE=RichD;362327]I'll run 100 @ 11e7 - just for grins.[/QUOTE]
nothing
and
-pm1 6e9 - nothing.

 prgamma10 2013-12-21 03:22

[QUOTE=prgamma10;362270]Starting 4000 curves at 3e7 (for the [URL="http://factordb.com/index.php?id=1100000000640314791"]c148[/URL]).[/QUOTE]
Done, no factor.

 prgamma10 2013-12-24 13:13

Anyone running GNFS for the c148?

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