mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   Aliquot Sequences (https://www.mersenneforum.org/forumdisplay.php?f=90)
-   -   Reserved for MF - Sequence 4788 (https://www.mersenneforum.org/showthread.php?t=11615)

yoyo 2014-01-12 15:51

I'll run 18000 curves @11e7.

Batalov 2014-01-12 18:55

Dequeue it.

[CODE]Input number is 2095010378204563656695741756783753159964364216690645080311033160647013838264880542506213777203448658545077137439156781436919049807995514691947165591832132016043699139605979500193 (178 digits)
Using B1=110000000, B2=776278396540, polynomial Dickson(30), sigma=3956050449
Step 1 took 556782ms
Step 2 took 155374ms
********** Factor found in step 2: 1077913448667516704097705450282212306427030148155783504079
Found probable prime factor of 58 digits: 1077913448667516704097705450282212306427030148155783504079
Probable prime cofactor 1943579404074001253889247299623124721716456137318152011934607052797939588595842046790643454874442505982249244857574561167 has 121 digits
[/CODE]P.S. Replace it with the [URL="http://factordb.com/sequences.php?se=1&aq=4788&action=range&fr=5208&to=5208"]c184[/URL] ...at B1=260e6 (110e6 is done)
[URL="http://factordb.com/sequences.php?se=1&aq=4788&action=range&fr=5208&to=5208"][/URL]

debrouxl 2014-01-12 19:55

Phew. Sieving that one would have been a mildly painful process :smile:

schickel 2014-01-13 06:01

[QUOTE=Batalov;364460]P.S. Replace it with the [URL="http://factordb.com/sequences.php?se=1&aq=4788&action=range&fr=5208&to=5208"]c184[/URL] ...at B1=260e6 (110e6 is done)
[URL="http://factordb.com/sequences.php?se=1&aq=4788&action=range&fr=5208&to=5208"][/URL][/QUOTE]Let's hope we can crack the c184 with ECM. If we can, we'll have another sequence hit 190 digits:[code] 3366 2106. sz 180 2^3 * 3^2 * 53
276 1769. sz 181 2 * 3^4 * 7^2 * 3191 * 9664277081 * 16213702303683581
842592 8031. sz 181 2^3 * 3 * 5 * 37 * 73 * 11069
660 895. sz 183 2^3 * 3^2 * 5 * 3163 * 14159 * 32070039222359 * 81741146396847353333
8352 1759. sz 185 2^2 * 7 * 47 * 83 * 523 * 55933 * 122027 * 215552863 * 10440672146963
4788 5208. sz 189 2^3 * 3 * 3023
2340 723. sz 189 2^3 * 3^2 * 5 * 13 * 1109 * 2081467 * 9183439
3270 687. sz 191 2^5 * 3 * 7 * 499 * 2297 * 28151[/code]2340 has a chance to beat 4788, but it won't hit 190 until i725....

yoyo 2014-01-13 19:21

[QUOTE=Batalov;364460]
P.S. Replace it with the [URL="http://factordb.com/sequences.php?se=1&aq=4788&action=range&fr=5208&to=5208"]c184[/URL] ...at B1=260e6 (110e6 is done)
[URL="http://factordb.com/sequences.php?se=1&aq=4788&action=range&fr=5208&to=5208"][/URL][/QUOTE]
Ok, I queued 42000 curves @260e6.
Should be visible as soon as the first result returns.
yoyo

RichD 2014-02-17 04:36

GNFS on C184
 
We should have factors by the end of the week.

RichD 2014-02-22 19:10

C152 @ i5211
 
Thanks to [B]ryanp[/B] for splitting the C184 = p70 * p115.

Now 2^3 * 3 * ... * C152.

prgamma10 2014-02-26 10:42

[QUOTE=RichD;367565]Now 2^3 * 3 * ... * C152.[/QUOTE]
t45 done, no factor.
3300@43e6 needed.

~75 secs per 11e6 curve, is that a problem?

RichD 2014-02-27 07:30

C158
 
1038 @ 43e6 - no factor

[...pausing...]

RichD 2014-03-02 07:15

C158
 
1107 @ 11e7 - nothing.

RichD 2014-03-28 20:12

I sent a note to [B]debrouxl[/B] a couple weeks ago but he must be away.

I went ahead and posted a team sieve [URL="http://mersenneforum.org/showthread.php?t=19227"]thread[/URL] to keep things moving.


All times are UTC. The time now is 23:09.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.