10^420 + 1 sieving
 

Here is the polynomial file:
[CODE]name: n840
n: 191413141591299314411353617644492718709042398621746359743575335167576218516274501587918765785208170431266534615378694736680781077885837943706833300081
skew: 581056.87
# norm 3.49e+020
c5: 417300
c4: 6293707890075
c3: 661926573905922818
c2: -1142910230692705225820950
c1: -305033470566634835042268478702
c0: 13979210859054806935193981807485035
# alpha -5.68
Y1: 22746208757392231
Y0: -53988855542895713658925943846
# Murphy_E 4.74e-012
# M 42516010405424856805684090534471339985472838519578990692918969250315963958564685692805011963349843096316919602745856301635282723806748487864856881786
type: snfs
rlim: 20800000
alim: 20800000
lpbr: 29
lpba: 29
mfbr: 58
mfba: 58
rlambda: 2.6
alambda: 2.6
qintsize: 100000
[/CODE]
Prior to sieving my current number, I am currently using my laptop with the processor "AMD Turion 64 x2". :smile:

Isn't it a gnfs type?

Good luck!
Report after half a year.
As a gnfs it's an ok number. (snfs difficulty with a sextic is 240)
Just a little bit big for a laptop.

P.S. Do set
[FONT=Courier New]type: gnfs[/FONT]

Oops! I guess the GNFS for this number may be faster than SNFS.

"You say that as if it were a bad thing".

Your poly was already gnfs. Did you think you were doing [I]snfs[/I] by just typing the word "snfs"? By setting "type: gnfs" you will sieve on the other side, but you could have gotten the same effect in many other ways. Anyway, carry on.

No linear algebra step yet
 

Hello, Batalov. While factoring 10,420+ of c150, I currently have 21788904 relations in my new laptop, (I changed it to a faster laptop), and it's still not going to linear algebra step yet. Hmmm...

[QUOTE=juno1369;203877]Hello, Batalov. While factoring 10,420+ of c150, I currently have 21788904 relations in my new laptop, (I changed it to a faster laptop), and it's still not going to linear algebra step yet. Hmmm...[/QUOTE]

you will need ~46M relations for a c150, so you are approx. halfway through.

What is ~46M?

[QUOTE=juno1369;203882]What is ~46M?[/QUOTE]

approx. 46 million.

That's odd, because when Msieve opens with the number I'm factoring, it takes longer. I mean the "error -11 reading relations", for example:
error -11 reading relation 16464491
error -11 reading relation 16464492
error -11 reading relation 16464493
error -11 reading relation 16464494
error -11 reading relation 16464495
error -11 reading relation 16464496
error -11 reading relation 16464497
error -11 reading relation 16464498
error -11 reading relation 16464499
error -11 reading relation 16464500
error -11 reading relation 16464501
error -11 reading relation 16464502
error -11 reading relation 16464503
error -11 reading relation 16464504
error -11 reading relation 16464505
error -11 reading relation 16464506
error -11 reading relation 16464507
error -11 reading relation 16464508
error -11 reading relation 16464509
error -11 reading relation 16464510
error -11 reading relation 16464511
error -11 reading relation 16464512
error -11 reading relation 16464513
error -11 reading relation 16464514

...and so on until the current number of relations.

What could be the problem?

[QUOTE=juno1369;204503]That's odd, because when Msieve opens with the number I'm factoring, it takes longer. I mean the "error -11 reading relations", for example:
error -11 reading relation 16464491
...
error -11 reading relation 16464514

...and so on until the current number of relations.

What could be the problem?[/QUOTE]

This message (and error -6 as well) show up on the sieving data
I ship off to Greg and to Serge. They say things like "transient errors"
and non-reproducible. A small percentage of the relns; nothing to
worry about; at least not on this account. -Bruce