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Search: Posts Made By: Drdmitry
Forum: Aliquot Sequences 2021-03-05, 23:22
Replies: 972
Views: 92,710
Posted By Drdmitry
After a long delay of 8 months, a new marge under...

After a long delay of 8 months, a new marge under 1M is found by yafu@home:
377880:i3262 = 21768:i13
Forum: Aliquot Sequences 2021-02-27, 00:44
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Dropping 893304

Dropping 893304
Forum: Aliquot Sequences 2020-12-10, 10:25
Replies: 2
Views: 900
Posted By Drdmitry
I did not see a similar search here. However, to...

I did not see a similar search here. However, to tell you the truth, I did not check too deeply.

No problem, I will add, as it does not take much time.
Forum: Aliquot Sequences 2020-12-08, 23:41
Replies: 2
Views: 900
Posted By Drdmitry
Small numbers with the longest 2*3 drivers

It is believed that any driver, in particular 2*3 driver, breaks sooner or later. But for how long such a driver can continue unbroken? I searched small numbers with the driver 2*3 for as long driver...
Forum: Aliquot Sequences 2020-07-27, 12:00
Replies: 247
Views: 36,088
Posted By Drdmitry
There are only two aliquot sequences below 100000...

There are only two aliquot sequences below 100000 which never reached 145 digits:
38052 (reserved by Clifford, last update 21.07.2019)
46758 (jacobs and Richard Guy, 25.12.2017)
Both of them look...
Forum: Aliquot Sequences 2020-06-12, 01:09
Replies: 247
Views: 36,088
Posted By Drdmitry
Thumbs up Finally, all aliquot sequences below 1e6 reach...

Finally, all aliquot sequences below 1e6 reach 140 digits at east once. :showoff:

It looks like the next milestone of 150 digits will take very long time.
Forum: Aliquot Sequences 2020-03-31, 01:20
Replies: 247
Views: 36,088
Posted By Drdmitry
As far as I can see, there are only four aliquot...

As far as I can see, there are only four aliquot sequences below 1000000 which never reached 140 digits:
15390 (reserved by yafu@home, last update 31.03.2020),
62820 (Batalov, 27.03.2019),
780576...
Forum: Aliquot Sequences 2020-02-21, 08:32
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Drop 634242

Drop 634242
Forum: Aliquot Sequences 2020-01-27, 22:21
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Taking 634242

Taking 634242
Forum: Aliquot Sequences 2020-01-03, 22:30
Replies: 2,934
Views: 196,183
Posted By Drdmitry
Finally, with 12562 known terms, this sequence...

Finally, with 12562 known terms, this sequence has become the longest sequence below 1e6 for the moment.

However it will be impossible to beat 2005020 without a downdriver.
Forum: Aliquot Sequences 2020-01-01, 23:11
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Dropping 704850

Dropping 704850
Forum: Aliquot Sequences 2019-12-26, 04:36
Replies: 972
Views: 92,710
Posted By Drdmitry
It seems that one more sequence below 1e6...

It seems that one more sequence below 1e6 terminated in the last couple of days. There were (https://www.rechenkraft.net/aliquot/AllSeq.html) 9130 open sequences a week ago . But now there are only...
Forum: Aliquot Sequences 2019-12-09, 22:37
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Reserving 704850

Reserving 704850
Forum: FactorDB 2019-11-30, 02:08
Replies: 39
Views: 12,498
Posted By Drdmitry
I do not think he did it on purpose. Maybe the...

I do not think he did it on purpose. Maybe the database got broken by some reason.
But this situation demonstrates the importance of having several backup copies of this database.
Forum: Aliquot Sequences 2019-11-11, 00:03
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Release 583680

Release 583680
Forum: Aliquot Sequences 2019-09-08, 03:52
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Taking 583680

Taking 583680
Forum: Aliquot Sequences 2018-12-19, 11:45
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Reserving 618840

Reserving 618840
Forum: Aliquot Sequences 2018-12-03, 11:10
Replies: 972
Views: 92,710
Posted By Drdmitry
Yesterday there were 9134 open sequences between...

Yesterday there were 9134 open sequences between 1 and 1e6. Now there are 9131 of them. Does anyone know, which sequences merged/terminated?
Forum: Aliquot Sequences 2018-09-22, 06:42
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Reserving 893304

Reserving 893304
Forum: Aliquot Sequences 2018-09-17, 12:03
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Drop 315294

Drop 315294
Forum: Aliquot Sequences 2018-07-29, 11:24
Replies: 972
Views: 92,710
Posted By Drdmitry
601104:i2695 = 147192:i9 Thanks to yafu@home....

601104:i2695 = 147192:i9
Thanks to yafu@home. That was actually discovered several days ago but the sequence 601104 is still on the blue page.
Forum: Aliquot Sequences 2018-07-19, 11:01
Replies: 3,405
Views: 304,029
Posted By Drdmitry
Take 419286 315294

Take 419286 315294
Forum: Aliquot Sequences 2017-11-17, 03:36
Replies: 972
Views: 92,710
Posted By Drdmitry
I suggest to put terminations and merges of >1M...

I suggest to put terminations and merges of >1M sequences to the third post or to the second but not to the first one. I prefer to separate >1M sequences from <1M ones.
Forum: Aliquot Sequences 2017-10-24, 04:34
Replies: 972
Views: 92,710
Posted By Drdmitry
231552...

231552 (http://factordb.com/sequences.php?se=1&aq=231552&action=last20) terminates at i2667 (thanks to yafu@home)
Forum: Aliquot Sequences 2017-09-30, 10:16
Replies: 972
Views: 92,710
Posted By Drdmitry
By the way, the max height of 251208 is 147...

By the way, the max height of 251208 is 147 digits which is a new record.
Congratulations, LaurV!
Showing results 1 to 25 of 238

 
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