Subproject #3: 700k-800k sequences to 100 digits - Page 44

Batalov · 2010-01-04, 09:03

760590 762030 761516 762840 763176 764346 done.

758646 761880 763728 had been done by others.

Greebley · 2010-01-04, 15:48

I released 713214 at 121 digits with driver 2^6*127. At 122 digits it hit the down-driver, but didn't make it below 100 digits before losing it again. Recent evidence has shown that losing the down driver above 100 digits more likely than I would have expected if one gains it over 120 digits. The really sad part is that it takes a long time to get down only to be a dud.

fivemack · 2010-01-04, 16:06

757614 at 110 digits, stopped
762216 at 105 digits, stopped
762720 at 100 digits (down to 50 and back up again), stopped

EdH · 2010-01-04, 16:13

releasing 760392: size 101, i354, 2³ * 3² * 7² * 7451 * 50321 * c89

(From about i97, it just did a dead run uphill...)

reserving 760542

fivemack · 2010-01-04, 16:55

764844 at 100 digits, having got down to 12 and then gone up again. 2*3 driver.

Buzzo · 2010-01-04, 18:09

done with 755460
reserving 758172

edit: 758172 is already at 101 digits! so is 758460, 758562, and 758976

reserving 760200 instead

10metreh · 2010-01-04, 18:49

The mystery worker must be watching this thread: he/she/it doesn't seem to be working on any sequences anyone else has reserved. Can you come out of the dark please?

richs · 2010-01-04, 21:01

Sorry, I didn't notice that the entire 770k-780k range was reserved. Anyway, someone ran 768222 up to 103 digits overnight, n=1785, 2^3 x 5^2.

EdH · 2010-01-05, 01:11

I just noticed that the number I'm running, 753732, had an iteration (866) that had only 2 and an 88 digit number (same size as composite) for factors. Is that of any interest to anyone but myself?

Code:

866.   9916162230667719863575235049237917670286181628737061325814830007741512112992620412854434 = 2 * 4958081115333859931787617524618958835143090814368530662907415003870756056496310206427217

10metreh · 2010-01-05, 07:56

Quote:

Originally Posted by EdH

I just noticed that the number I'm running, 753732, had an iteration (866) that had only 2 and an 88 digit number (same size as composite) for factors. Is that of any interest to anyone but myself?

Code:

866.   9916162230667719863575235049237917670286181628737061325814830007741512112992620412854434 = 2 * 4958081115333859931787617524618958835143090814368530662907415003870756056496310206427217

That is common, and it is bad news when the prime is of the form 4n+1, because you lose the downdriver.

This mystery worker is getting a bit annoying. They obviously know someone else is working on this range because others are updating the DB. If by any chance you're reading this thread, please could you reply? I won't be cross with you or anything.

Greebley · 2010-01-05, 12:06

Done with 748080, 108 digits, 2*3
Done with 748244, 108 digits, 2^2*7
I am keeping 748350 at 119 digits, 2^3*7

2010-01-04, 18:09	#479
Buzzo May 2008 3·37 Posts	done with 755460 reserving 758172 edit: 758172 is already at 101 digits! so is 758460, 758562, and 758976 reserving 760200 instead Last fiddled with by Buzzo on 2010-01-04 at 18:14

2010-01-05, 01:11	#482
EdH "Ed Hall" Dec 2009 Adirondack Mtns 23×167 Posts	I just noticed that the number I'm running, 753732, had an iteration (866) that had only 2 and an 88 digit number (same size as composite) for factors. Is that of any interest to anyone but myself? Code: 866. 9916162230667719863575235049237917670286181628737061325814830007741512112992620412854434 = 2 * 4958081115333859931787617524618958835143090814368530662907415003870756056496310206427217

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2010-01-04, 09:03	#474
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 9,497 Posts	760590 762030 761516 762840 763176 764346 done. 758646 761880 763728 had been done by others.

2010-01-04, 15:48	#475
Greebley May 2009 Dedham Massachusetts USA 1101001011₂ Posts	I released 713214 at 121 digits with driver 2^6*127. At 122 digits it hit the down-driver, but didn't make it below 100 digits before losing it again. Recent evidence has shown that losing the down driver above 100 digits more likely than I would have expected if one gains it over 120 digits. The really sad part is that it takes a long time to get down only to be a dud.

2010-01-04, 16:06	#476
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	757614 at 110 digits, stopped 762216 at 105 digits, stopped 762720 at 100 digits (down to 50 and back up again), stopped

2010-01-04, 16:13	#477
EdH "Ed Hall" Dec 2009 Adirondack Mtns 3841₁₀ Posts	releasing 760392: size 101, i354, 2³ * 3² * 7² * 7451 * 50321 * c89 (From about i97, it just did a dead run uphill...) reserving 760542

2010-01-04, 16:55	#478
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	764844 at 100 digits, having got down to 12 and then gone up again. 2*3 driver.

2010-01-04, 18:49	#480
10metreh Nov 2008 2·3³·43 Posts	The mystery worker must be watching this thread: he/she/it doesn't seem to be working on any sequences anyone else has reserved. Can you come out of the dark please?

2010-01-04, 21:01	#481
richs "Rich" Aug 2002 Benicia, California 2³·3·5·11 Posts	Sorry, I didn't notice that the entire 770k-780k range was reserved. Anyway, someone ran 768222 up to 103 digits overnight, n=1785, 2^3 x 5^2.

2010-01-05, 12:06	#484
Greebley May 2009 Dedham Massachusetts USA 1513₈ Posts	Done with 748080, 108 digits, 23 Done with 748244, 108 digits, 2^27 I am keeping 748350 at 119 digits, 2^3*7