20081125, 12:10  #56  
Bamboozled!
"πΊππ·π·π"
May 2003
Down not across
2·5,323 Posts 
Quote:
Paul 

20081125, 12:42  #57 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
22256_{8} Posts 
Rumack: You'd better tell the Captain we've got to land as soon as we can. This woman has to be gotten to a hospital.
Elaine Dickinson: A hospital? What is it? Rumack: It's a big building with patients, but that's not important right now. __________ I know what you mean, of course. With Prime95 people (myself included) find 120+ digit "factors" every once in a while, with P1, though... Same difference, sure. For this to happen there must have been three factors (P<<1; the number was already cleared at 30digits, and it's quite short, not Mersennesize, therefore not much room), and two of them had to be smooth in the same field (let's say P~1/800 for 30digits). Still, pretty lucky. Last fiddled with by Batalov on 20081125 at 13:01 
20081125, 13:38  #58  
Bamboozled!
"πΊππ·π·π"
May 2003
Down not across
2×5,323 Posts 
Quote:
Paul 

20081125, 13:51  #59 
Einyen
Dec 2003
Denmark
17·181 Posts 
http://www.snpp.com/episodes/2F17.html
Dr. S: Wait: did you know that there's a direct correlation between the decline of Spirograph and the rise in gang activity? Think about it. Bart: I will. [walks off] Dr. S: No you won't. [goes back to drawing] 
20081201, 01:02  #60 
Jun 2003
Ottawa, Canada
494_{16} Posts 
I think I just nabbed a big one...
I was factoring a C212, trying out yafu (so rho,p+1,p1,ecm) and after a couple of minutes: C212 = 11969 . 1541364950613953 . C193 Then doing a few minutes of P+1 on the C193 (playing with GMPECM 6.2.1), I ended up with: C193 = P34 . P160 Code:
P34 = 4086525601957322196250605280513217 P160 = 1116347430502685727295686258559284600000143009148663411245736927710476849533994789598158421658426637507289495130855789711863657445852880216696146697010516210753 Last fiddled with by Jeff Gilchrist on 20081201 at 01:20 
20081203, 15:58  #61 
Jun 2003
Ottawa, Canada
2^{2}·293 Posts 
Another 160 digit prp cofactor found using GMPECM:
C188 = P28 . P160 Code:
C188 = 24282246583533357058956441317683022167750623010380385535734251894748038050513633364080896637485797011949098359363043063994158817112684635017983905521394893653678354661924887279901207289433 P28 = 6537366562602113177967158503 P160 = 3714377395087988869214434676837284949265028169225505688211061865951816791061201852303099504699959524370447330462435491495931668180505697643582022479048756165311 
20081203, 16:03  #62 
Nov 2008
912_{16} Posts 
What were those numbers? Were they completely random?
Posts: 207. 
20081203, 16:08  #63 
Jun 2003
Ottawa, Canada
1172_{10} Posts 

20081203, 17:51  #64  
Nov 2003
1D24_{16} Posts 
Quote:
limits, I must ask: why are you working on extending the limits? Didn't you mother ever tell you: finish what you start before doing something else??? Just my opinion. 

20081203, 19:04  #65  
Jun 2003
Ottawa, Canada
2224_{8} Posts 
Quote:
Quote:
Speaking of which 4^356+3^356 just gave me these after a few seconds of YAFU running rho: 4^356+3^356 (C215) = 337.329657. P207 

20081203, 20:11  #66 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
24AE_{16} Posts 
Jeff, the size of the last factor doesn't matter at all.
Please pay attention only to the size of the penultimate factor (or other things that do correlate with complexity). Here's a couple of trivial examples of much larger last factors, just off the top of my head... 2^49733 = 2399 . 22993 . 147792832438060050225241 . p1467 10^2351+1 = 11 . 4703 . 307368548553345677 . 1080350324249483399506717 . p2305 (Primocertified, just in case anyone was wondering) Happy factoring! Welcome to the club. ___ *these are not even my numbers 
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