20120629, 19:54  #1959 
Oct 2006
Berlin, Germany
1001011111_{2} Posts 
Does somebody continue with i5042?
Do we need some ecm on the C140? yoyo 
20120629, 20:13  #1960 
May 2008
3·5·73 Posts 
I am about 2/3 through sieving line 5042.

20120630, 04:13  #1961 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
3^{2}·17·61 Posts 
Now, a c154 in i5053...

20120715, 19:19  #1962 
Oct 2006
Berlin, Germany
607 Posts 
I'll run some ECM on it.
yoyo 
20120715, 19:25  #1963 
May 2008
2107_{8} Posts 
I have ran 4500 curves on line 5053 @ B1=8e7, B2=970297861270
And in case anyone wants to sieve, here is the best poly I've found: Code:
# sieve with ggnfs lasieve4 I14e on alg side from Q=10M to 44.25M # est ~55M raw relations (avg. 0.075 sec/rel C2D @ 3.4GHz) # aq4788:5053 n: 4971642585436245304199897805331756055600565137800595796541924807311330928440209616093596113532104862769676040335033925797736632789395821441130573387502777 # norm 7.319935e15 alpha 7.656319 e 3.609e12 rroots 5 skew: 5010876.48 c0: 38901470682692277686014924063065162624 c1: 177561617447121028456763126761848 c2: 35348168490786629838457703 c3: 14260968711721830002 c4: 1118618692636 c5: 229320 Y0: 464741779151076619911716995751 Y1: 134905220251425821 rlim: 20000000 alim: 20000000 lpbr: 29 lpba: 29 mfbr: 58 mfba: 58 rlambda: 2.5 alambda: 2.5 
20120816, 18:08  #1964 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2475_{16} Posts 
C154_4788_5053 was factored by someone and sequence is advanced to 5056 c143.

20120816, 19:02  #1965  
May 2008
3×5×73 Posts 
Quote:
http://www.rechenkraft.net/yoyo/y_factors_ecm.php 

20120816, 19:32  #1966  
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
1110000110101_{2} Posts 
Quote:


20120817, 04:34  #1967 
"Tapio Rajala"
Feb 2010
Finland
100111011_{2} Posts 
During last night a threw 1500@11e6 at the c143 on i5056.

20120819, 15:49  #1968 
May 2008
3·5·73 Posts 
I found a p50 via ecm:
Code:
Using B1=80000000, B2=970297861270, polynomial Dickson(30), sigma=7396671262133668370 Step 1 took 257397ms Step 2 took 132159ms ********** Factor found in step 2: 27726112512152614091012437650886401627564888513659 Found probable prime factor of 50 digits: 27726112512152614091012437650886401627564888513659 Probable prime cofactor 774400542816425749794501457746540727271775646086386521943702162057522353477124577938249738833 has 93 digits 
20120820, 03:38  #1969 
"Frank <^>"
Dec 2004
CDP Janesville
84A_{16} Posts 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Reserved for MF  Sequence 3366  RichD  Aliquot Sequences  468  20210127 01:16 
Primes in nfibonacci sequence and nstep fibonacci sequence  sweety439  And now for something completely different  17  20170613 03:49 
ECM for c166 from 4788:2661  frmky  Aliquot Sequences  36  20110428 06:27 
ECM work on 4788:2549.c170  schickel  Aliquot Sequences  51  20110105 02:32 
80M to 64 bits ... but not really reserved  petrw1  Lone Mersenne Hunters  82  20100111 01:57 