Reserved for MF - Sequence 276 - Page 4

wombatman · 2017-06-01, 03:32

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.

ryanp · 2017-06-06, 02:16

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

Dubslow · 2017-06-06, 02:49

Batalov · 2017-06-06, 05:45

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.

LaurV · 2017-06-06, 05:48

Dubslow · 2017-06-15, 17:51

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

Batalov · 2017-06-16, 01:33

So?
What is the probability of 2 * 3^2 * p203, eh?

Dubslow · 2017-06-16, 04:27

Quote:

Originally Posted by Batalov

So?
What is the probability of 2 * 3^2 * p203, eh?

Slim, but better than before

LaurV · 2017-07-30, 14:40

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

ryanp · 2017-07-30, 15:05

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)

Batalov · 2017-07-30, 15:36

Quote:

Originally Posted by LaurV

We may help with sieving if guided properly

TL;DR version of Ryan's message: No you can't.

2017-06-01, 03:32	#34
wombatman I moo ablest echo power! May 2013 1,741 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

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