Aliquot sequence reservations - Page 60

fivemack · 2014-12-14, 20:25

Dropping 142092 150540 157040
(C112; C121; C115)

Taking 202524 212646 229560 244728 245406 250560 255120 256280 266220 271932 271980 283206 289674 297000 297808

Sergiosi · 2014-12-14, 22:15

Dropping 912380

Taking 232680

fivemack · 2014-12-16, 07:58

Dropping 102432 121560 133500

(C111; C99; C118)

fivemack · 2014-12-16, 22:19

Taking 138108 142080 201048 265800 268464 271740 283962 320430 345828 384264
Taking 385176 491544 502344 530796 594648 635346 661032 757722 758562 761880
Taking 785428 810852 890442 908604 953640 987660

henryzz · 2014-12-18, 18:38

Had a successful trial of the anti-stomping code for the last post. Fivemack reserved 594648 when he already had it.

Dubslow · 2014-12-19, 08:21

That was incredibly satisfying for me to read (even if it was a ~2 line fix)

henryzz · 2014-12-19, 20:29

Quote:

Originally Posted by Dubslow

That was incredibly satisfying for me to read (even if it was a ~2 line fix)

And then I caused another test with my post lol.

fivemack · 2014-12-20, 11:47

Dropping 758562 (2^4 * 5 * C121, ECMed)

Dropping 115680 162348

fivemack · 2014-12-20, 16:00

Dropping 202524 594648 890442

Happy5214 · 2014-12-20, 16:39

Reserving 228504, my first.

There's an error on factordb in that sequence for index 1600. Is there anything I can do about that? I already have that term fully factored.

fivemack · 2014-12-20, 17:17

If you search the forum for 228504, you find Dubslow's list of broken sequences.

Step 1601 of 228504 is

Code:

115002363456781951116353025432393722069665825524716257351967573745719336629908761109140183558732708396906923367555454

and I took the sequence about 100 steps further, so the current end state is

Step number 1717
Integer is

Code:

 1586485861423510235399324404757059803439124684931897631197268284885225811322788387601275205850997058239621225615792193109658722

The cofactor is a C120

Code:

106833935246644834733488161748831537001445027536794745379922656314977248601502596670339066649683324171029370174217444929

which has been fully-ECMed by me and is ready for GNFS.

Basically, all the sequences with size less than 120 in Dubslow's table are broken: two of us (mostly RichardS, with a small contribution from myself) have recently devoted quite a lot of CPU-months to pulling all sequences to size 120. And ones with small cofactors tend to be being actively pursued, so I'd recommend using the filter on dubslow's page http://dubslow.tk/aliquot/AllSeq.html to look only for things last updated in 2013 or before.

Maybe try 530460? It's at least guaranteed to go down next term.

2014-12-19, 08:21	#655
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 3×29×83 Posts	That was incredibly satisfying for me to read (even if it was a ~2 line fix) Last fiddled with by Dubslow on 2014-12-19 at 08:22 Reason: emote fix

2014-12-20, 17:17	#660
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	If you search the forum for 228504, you find Dubslow's list of broken sequences. Step 1601 of 228504 is Code: 115002363456781951116353025432393722069665825524716257351967573745719336629908761109140183558732708396906923367555454 and I took the sequence about 100 steps further, so the current end state is Step number 1717 Integer is Code: 1586485861423510235399324404757059803439124684931897631197268284885225811322788387601275205850997058239621225615792193109658722 The cofactor is a C120 Code: 106833935246644834733488161748831537001445027536794745379922656314977248601502596670339066649683324171029370174217444929 which has been fully-ECMed by me and is ready for GNFS. Basically, all the sequences with size less than 120 in Dubslow's table are broken: two of us (mostly RichardS, with a small contribution from myself) have recently devoted quite a lot of CPU-months to pulling all sequences to size 120. And ones with small cofactors tend to be being actively pursued, so I'd recommend using the filter on dubslow's page http://dubslow.tk/aliquot/AllSeq.html to look only for things last updated in 2013 or before. Maybe try 530460? It's at least guaranteed to go down next term. Last fiddled with by fivemack on 2014-12-20 at 17:21

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2014-12-14, 20:25	#650
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 1100100011000₂ Posts	Dropping 142092 150540 157040 (C112; C121; C115) Taking 202524 212646 229560 244728 245406 250560 255120 256280 266220 271932 271980 283206 289674 297000 297808

2014-12-14, 22:15	#651
Sergiosi Jun 2013 88₁₀ Posts	Dropping 912380 Taking 232680

2014-12-16, 07:58	#652
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	Dropping 102432 121560 133500 (C111; C99; C118)

2014-12-16, 22:19	#653
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	Taking 138108 142080 201048 265800 268464 271740 283962 320430 345828 384264 Taking 385176 491544 502344 530796 594648 635346 661032 757722 758562 761880 Taking 785428 810852 890442 908604 953640 987660

2014-12-18, 18:38	#654
henryzz Just call me Henry "David" Sep 2007 Cambridge (GMT/BST) 2·3³·109 Posts	Had a successful trial of the anti-stomping code for the last post. Fivemack reserved 594648 when he already had it.

2014-12-20, 11:47	#657
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	Dropping 758562 (2^4 * 5 * C121, ECMed) Dropping 115680 162348

2014-12-20, 16:00	#658
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	Dropping 202524 594648 890442

2014-12-20, 16:39	#659
Happy5214 "Alexander" Nov 2008 The Alamo City 2×353 Posts	Reserving 228504, my first. There's an error on factordb in that sequence for index 1600. Is there anything I can do about that? I already have that term fully factored.