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-   Aliquot Sequences (https://www.mersenneforum.org/forumdisplay.php?f=90)
-   -   Subproject #5: 800k-900k sequences to 100 digits (https://www.mersenneforum.org/showthread.php?t=13029)

Andi47 2010-02-21 09:41

815562 done, i=891, sz=100, [COLOR="Red"]2*3[/COLOR]*c100

RichD 2010-02-21 15:58

817542 is done, size 103; [COLOR="Red"]2^3 * 3[/COLOR]^2 * ... * c86

reserving 819600

unconnected 2010-02-21 16:48

Taking 821034, 823170.

henryzz 2010-02-21 17:52

[quote=10metreh;206196]As I said a few posts ago, this subproject is fine even for lone P4s: we're not in too much of a hurry and we don't really mind about one sequence not getting completed for ages. Memory doesn't become an issue below 100 digits even with only 256MB.
Is G gigahertz or gigabytes? Assuming gigahertz, I'm not too sure how long it takes to bring a sequence to 100 digits on a P3, but this subproject is fine for slow but not too slow computers such as the earlier P4s. That's one of the good things about this project. :smile:[/quote]
My suggestion would be to put no more than a quad on this sort of subproject for many days.
I personally run most sequences to 105-110 digits that i get from subprojects. I use subprojects to gain myself nice sequences and then run them high.
unreserving 804192 at 117 digits
edit: the database is being very slow at accepting my factors i will have the file available if needed
edit2: just noticed there are 5610667 things in the database's queue a lot!!

Batalov 2010-02-22 03:10

[FONT=Arial]Done with these three, keeping one reserved:[/FONT]
[FONT=Arial Narrow]821232 (c104) 781 - 4602 . 175296903.. = 2^3 <- keeping reserved[/FONT]
[FONT=Arial Narrow]823620 (c102) 853 - 1262 . 363890264.. = 2^2 * 3 * 7^3 [/FONT]
[FONT=Arial Narrow]821640 (c106) 490 - 1106 . 271031219.. = 2^3 * 3 * 5^2[/FONT]

EdH 2010-02-22 04:29

[URL="http://www.factordb.com/search.php?se=1&aq=818616&action=last20&fr=&to="]818616[/URL] is finished: size 102, i1283, 2[sup]2[/sup] * 7[sup]2[/sup] * 41 * 349 * 85091 * c90

EdH 2010-02-22 04:39

Yes, I was referring to GHz. Since that one machine seems to be running some of these sequences within a day, I've grabbed one of the subproject #4 sequences to see what it does. Although it is a 2.4 GHz, it only has 512M RAM. I have it running 24/7 with aliqueit at normal priority under WinXP.

Greebley 2010-02-22 05:51

Done with 816876, 105 digits, 2^2*7


Reserving 823116, 823134, 823176, 823242, 823320, 823350, 823572, 823608, 823884,

Greebley 2010-02-22 12:48

Done with 823166, 102 digits, 2^4*3*7*31

RichD 2010-02-22 15:44

Releasing 819600 size 100; 2 * 7 * 17 * ... * c89
It reached 103 but it takes too long to break a mid-c90 on my G4 Mac.
I can't get GGNFS compiled so I only use msieve.
Someone else can have fun with it.

Reserving 817242.

10metreh 2010-02-22 16:12

[QUOTE=RichD;206359]Someone else can have fun with it.
[/QUOTE]

That someone will be me. I've put the reservation in here because it is likely to go below 100 again.
Haven't had a downdriver in ages so this will hopefully be fun.


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