Reserved for MF - Sequence 4788 - Page 193

Batalov · 2013-07-10, 02:28

The next step would be to find the status from Christophe Clavier and associates (http://mersenneforum.org/showthread.php?t=11625). For one reason or another, he keeps his webpages out of sync with the most current state and he doesn't update them in factordb; you can only find the state by contacting him. Do not assume empties as unreserved; all of the empty entries by default are worked on by Christophe and could be much more advanced than shown.

RichD · 2013-07-10, 04:38

Email sent to Christophe.

RichD · 2013-09-24, 18:03

2^4 * 3 * 31 * ... * c154

Thanks to ryanp for providing the factors to the previous term.

Code:

initial square root is modulo 488687
sqrtTime: 2621
prp71 factor: 40931608477444520015384185592248168673427599963797426933989565874867503
prp102 factor: 422293566116048814823195598447158307752534698287857194151418405416542984156255510642680991466196324279
elapsed time 00:43:42

debrouxl · 2013-09-24, 18:41

ECM at B1=3e6 cut off an easy p26, leaving a C129.
EDIT: and the same ECM run ended up factoring the C129 as p37 * p93.
EDIT2: at index 5156, the C168 is p29 * p139.

EdH · 2013-09-25, 03:25

Quote:

Originally Posted by Batalov

The next step would be to find the status from Christophe Clavier and associates (http://mersenneforum.org/showthread.php?t=11625). For one reason or another, he keeps his webpages out of sync with the most current state and he doesn't update them in factordb; you can only find the state by contacting him. Do not assume empties as unreserved; all of the empty entries by default are worked on by Christophe and could be much more advanced than shown.

Quite some time ago, someone (maybe Mini-geek or schickel, or maybe it was you) got a current set from Christophe and I helped update factordb from that set. Perhaps it is time to try again?

EdH · 2013-09-25, 16:35

>3500@11e6...

EdH · 2013-09-25, 20:47

~2000@43e6

prgamma10 · 2013-09-25, 23:04

Quote:

Originally Posted by EdH

~2000@43e6

It would be much faster to GNFS that c130 now, though.

RichD · 2013-09-25, 23:05

I have several hundred @ 11e6 & 43e6 so we are well past the ECM cut-off.
Here is good poly if you want to feed it to factMsieve. Don't forget to sieve on the -a side.

Code:

# expecting poly E from 8.06e-11 to > 9.27e-11
n: 2944319382357566177282558916865152338055975722560079892678869927700683205126419811544474585258973645778787423896577924588175555759
Y0: -7807975460998051621425545
Y1: 124987740105437
c0: -136230532601956965336407837538
c1: 13853835188349128321236775
c2: 239815727022408052905
c3: -13870607491614795
c4: -31214402812
c5: 101460
# skew 93540.14, size 1.760e-12, alpha -6.069, combined = 8.432e-11 rroots = 5
type: gnfs
skew: 93540.14

EdH · 2013-09-26, 01:19

225@11e7

I fired up gnfs, but I may not be available at the necessary time(s) to get the factors posted promptly.

Thanks for the poly...

EdH · 2013-09-26, 13:32

Bummer! I estimated 16M relations needed, but 17M failed, so I'll be a bit later in my factors since it will be a while before I get back to the computers...

Edit: 18M has succeeded - later...

2013-09-24, 18:41	#2116
debrouxl Sep 2009 1111010001₂ Posts	ECM at B1=3e6 cut off an easy p26, leaving a C129. EDIT: and the same ECM run ended up factoring the C129 as p37 * p93. EDIT2: at index 5156, the C168 is p29 * p139. Last fiddled with by debrouxl on 2013-09-24 at 19:16

2013-09-25, 16:35	#2118
EdH "Ed Hall" Dec 2009 Adirondack Mtns 111011111010₂ Posts	c130 >3500@11e6...

2013-09-25, 20:47	#2119
EdH "Ed Hall" Dec 2009 Adirondack Mtns 2×3³×71 Posts	c130 ~2000@43e6

2013-09-26, 01:19	#2122
EdH "Ed Hall" Dec 2009 Adirondack Mtns 2×3³×71 Posts	c130 225@11e7 I fired up gnfs, but I may not be available at the necessary time(s) to get the factors posted promptly. Thanks for the poly...

2013-09-26, 13:32	#2123
EdH "Ed Hall" Dec 2009 Adirondack Mtns 2·3³·71 Posts	Bummer! I estimated 16M relations needed, but 17M failed, so I'll be a bit later in my factors since it will be a while before I get back to the computers... Edit: 18M has succeeded - later... Last fiddled with by EdH on 2013-09-26 at 14:05

2013-07-10, 02:28	#2113
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2×47×101 Posts	The next step would be to find the status from Christophe Clavier and associates (http://mersenneforum.org/showthread.php?t=11625). For one reason or another, he keeps his webpages out of sync with the most current state and he doesn't update them in factordb; you can only find the state by contacting him. Do not assume empties as unreserved; all of the empty entries by default are worked on by Christophe and could be much more advanced than shown.

2013-07-10, 04:38	#2114
RichD Sep 2008 Kansas 6473₈ Posts	Email sent to Christophe.

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