mersenneforum.org Reserved for MF - Sequence 276
 User Name Remember Me? Password
 Register FAQ Search Today's Posts Mark Forums Read

 2017-06-01, 03:32 #34 wombatman I moo ablest echo power!     May 2013 32·193 Posts No curves at 260e6. 4700 curves at B1=850e6. Just as a double-check, 10000 curves at 110e6 completed without finding a factor gives the following suggested curves: Code:  4400 curves with B1 = 850.0e6 2600 curves with B1 = 2.9e9 If I increase the number of threads being used for sieving to 8, it gives: Code:  4400 curves with B1 = 850.0e6 42100 curves with B1 = 2.9e9 So yeah, the Bayesian tool basically skips right over the 260e6 curves. Last fiddled with by wombatman on 2017-06-01 at 03:32
 2017-06-06, 02:16 #35 ryanp     Jun 2012 Boulder, CO 181 Posts Thanks all for the ECM. I figured we've wasted enough cycles so I decided to do GNFS on the sequence 276 blocker. Code: Mon Jun 5 15:20:07 2017 commencing Lanczos iteration (64 threads) Mon Jun 5 15:20:07 2017 memory use: 9257.7 MB Mon Jun 5 15:21:04 2017 linear algebra at 0.0%, ETA 212h34m Mon Jun 5 15:21:21 2017 checkpointing every 110000 dimensions
 2017-06-06, 02:49 #36 Dubslow Basketry That Evening!     "Bunslow the Bold" Jun 2011 40
 2017-06-06, 05:45 #37 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 22×2,281 Posts I looked into the future and I didn't like what I saw. There's another hundred rows with "2 * 3 * ..." in this sequence and it will be really, really boring every step of the way. So of course it is vital to drive this sequence up. Not some 2^2 * 7^2 or 2^4 * 31^2 sequence, no. Oh no-no-no.
 2017-06-06, 05:48 #38 LaurV Romulan Interpreter     Jun 2011 Thailand 210368 Posts
2017-06-15, 17:51   #39
Dubslow

"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

3·29·83 Posts

How now? 2 * 3^2?

Quote:
 Originally Posted by Batalov I looked into the future and I didn't like what I saw. There's another hundred rows with "2 * 3 * ..." in this sequence and it will be really, really boring every step of the way. So of course it is vital to drive this sequence up. Not some 2^2 * 7^2 or 2^4 * 31^2 sequence, no. Oh no-no-no.
Conveniently enough, it was precisely that blocker C191 which yielded the 3^2

Last fiddled with by Dubslow on 2017-06-15 at 17:56

 2017-06-16, 01:33 #40 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 23A416 Posts So? What is the probability of 2 * 3^2 * p203, eh?
2017-06-16, 04:27   #41
Dubslow

"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

3·29·83 Posts

Quote:
 Originally Posted by Batalov So? What is the probability of 2 * 3^2 * p203, eh?
Slim, but better than before

 2017-07-30, 14:40 #42 LaurV Romulan Interpreter     Jun 2011 Thailand 2×11×397 Posts Is anybody working on the C206? Of course that is much over our wheelbarrow's abilities to factor, but we smell a break and we are extremely curious... We may help with sieving if guided properly
2017-07-30, 15:05   #43
ryanp

Jun 2012
Boulder, CO

181 Posts

Quote:
 Originally Posted by LaurV Is anybody working on the C206? Of course that is much over our wheelbarrow's abilities to factor, but we smell a break and we are extremely curious... We may help with sieving if guided properly
Yep, on it. It's currently in LA with slightly over 1 month to go in the current estimate.

Code:
linear algebra completed 2504817 of 48980616 dimensions (5.1%, ETA 863h50m)

2017-07-30, 15:36   #44
Batalov

"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

22·2,281 Posts

Quote:
 Originally Posted by LaurV We may help with sieving if guided properly
TL;DR version of Ryan's message: No you can't.

 Similar Threads Thread Thread Starter Forum Replies Last Post RichD Aliquot Sequences 406 2020-06-10 03:10 schickel Aliquot Sequences 2903 2020-01-06 04:32 sweety439 And now for something completely different 17 2017-06-13 03:49 petrw1 Lone Mersenne Hunters 82 2010-01-11 01:57 devarajkandadai Math 1 2007-08-25 15:23

All times are UTC. The time now is 21:21.

Sun Sep 20 21:21:06 UTC 2020 up 10 days, 18:32, 0 users, load averages: 1.33, 1.27, 1.33