Official "Raiders of the Lost Sequences" thread

Greebley · 2009-07-28, 17:25

So I finished my search for open-ended sequences that are not in the list. I found 3 potential sequences that were not on the Aliquot Sequence Summary Pages:
254568
547140
583950

They do not list a merge, seem to be correct, are at or above 80 digits, and don't end with the same value as any other sequence. Only if one of the few missing sequences merges with them would they not be open-ended. I therefore think they are sequences that should be included in the list of open sequences.

This puts my count of open-ended sequences at 9429.

If someone knows why they aren't listed (someone found they terminate?), then post.

I think I will take them to 100 digits to see if they get that far, so reserve them to me.

10metreh · 2009-07-28, 17:42

Sorry, couldn't resist changing the thread title in light of the action in Forum Feedback...

(In case you want to know, the old thread title was The three lost sequences??)

kar_bon · 2009-07-28, 19:10

as an official member of the RieselPrimeSearcher-Group "Raiders of the Lost Primes" (BTW: the name was my suggestion!) i have found the three lost sequences:

have a look at Wolfgangs page:

2001-12-09: 254568 is a side-sequence to 59688 - 254568:i1903 = 59688:i21 = 9111030
2002-06-21: 547140 is a side-sequence to 32016 - 547140:i1657 = 32016:i44 = 481216
2002-07-16: 583950 is a side-sequence to 78660 - 583950:i2880 = 78660:i13 = 2414798

so no new open seqs (for now)!

Greebley · 2009-07-28, 19:31

Looking at the indices, these happen past 80 digits. They must have been run farther. I will get the database up to date with the info you have posted.

kar_bon · 2009-07-28, 19:34

Quote:

Originally Posted by Greebley

Looking at the indices, these happen past 80 digits. They must have been run farther. I will get the database up to date with the info you have posted.

i think Wolfgang (and who else) have tested some 'promising' seqs a little bit further (don't know when those stepped down) and therefore of there merging, he deleted them of his list, like the C9C30 and others, but mentioned them in the history!

Greebley · 2009-07-28, 21:15

Are any of our open ended sequences listed as terminating or merging? Have you ever checked?

kar_bon · 2009-07-28, 21:20

no, not checked that page, but i've checked Wolfgang's latest C9C30 file against my summary and they are equal!

Greebley · 2009-07-30, 15:46

Ok, the sequences mentioned are now in the database to their merges and are no longer open-ended.

Greebley · 2009-07-30, 15:50

Oh, the list you referred to also mentions 47784 and you can fill in the question marks for that entry. Looks like Bosma found it.

Greebley · 2009-07-30, 19:18

19410 and 42800 should now be the only two sequences under 1 million that are open ended and don't appear on the summary page. However both are in the list as prime and merged and it is only a matter for me to run the seqs up to their resolution. At that point the db and summary list should agree barring only a very recent submission of a terminated sequence to the db that is not yet in the summary.

I calculated this automatically and get the same results, so I have high confidence there are no missing open sequences once I prove 19410 and 42800 terminate.

wolfcrey · 2009-07-30, 19:48

Quote:

Originally Posted by kar_bon

as an official member of the RieselPrimeSearcher-Group "Raiders of the Lost Primes" (BTW: the name was my suggestion!) i have found the three lost sequences:

have a look at Wolfgangs page:

2001-12-09: 254568 is a side-sequence to 59688 - 254568:i1903 = 59688:i21 = 9111030
2002-06-21: 547140 is a side-sequence to 32016 - 547140:i1657 = 32016:i44 = 481216
2002-07-16: 583950 is a side-sequence to 78660 - 583950:i2880 = 78660:i13 = 2414798

so no new open seqs (for now)!

I got the same data
Wolfgang

2009-07-28, 17:25	#1
Greebley May 2009 Dedham Massachusetts USA 3×281 Posts	Official "Raiders of the Lost Sequences" thread So I finished my search for open-ended sequences that are not in the list. I found 3 potential sequences that were not on the Aliquot Sequence Summary Pages: 254568 547140 583950 They do not list a merge, seem to be correct, are at or above 80 digits, and don't end with the same value as any other sequence. Only if one of the few missing sequences merges with them would they not be open-ended. I therefore think they are sequences that should be included in the list of open sequences. This puts my count of open-ended sequences at 9429. If someone knows why they aren't listed (someone found they terminate?), then post. I think I will take them to 100 digits to see if they get that far, so reserve them to me.

2009-07-28, 17:42	#2
10metreh Nov 2008 2×3³×43 Posts	Sorry, couldn't resist changing the thread title in light of the action in Forum Feedback... (In case you want to know, the old thread title was The three lost sequences??) Last fiddled with by 10metreh on 2009-07-28 at 17:54

2009-07-30, 15:50	#9
Greebley May 2009 Dedham Massachusetts USA 3·281 Posts	Oh, the list you referred to also mentions 47784 and you can fill in the question marks for that entry. Looks like Bosma found it. Last fiddled with by Greebley on 2009-07-30 at 15:51

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2009-07-28, 19:10	#3
kar_bon Mar 2006 Germany 3·23·43 Posts	as an official member of the RieselPrimeSearcher-Group "Raiders of the Lost Primes" (BTW: the name was my suggestion!) i have found the three lost sequences: have a look at Wolfgangs page: 2001-12-09: 254568 is a side-sequence to 59688 - 254568:i1903 = 59688:i21 = 9111030 2002-06-21: 547140 is a side-sequence to 32016 - 547140:i1657 = 32016:i44 = 481216 2002-07-16: 583950 is a side-sequence to 78660 - 583950:i2880 = 78660:i13 = 2414798 so no new open seqs (for now)!

2009-07-28, 19:31	#4
Greebley May 2009 Dedham Massachusetts USA 3·281 Posts	Looking at the indices, these happen past 80 digits. They must have been run farther. I will get the database up to date with the info you have posted.

2009-07-28, 21:15	#6
Greebley May 2009 Dedham Massachusetts USA 843₁₀ Posts	Are any of our open ended sequences listed as terminating or merging? Have you ever checked?

2009-07-28, 21:20	#7
kar_bon Mar 2006 Germany 3×23×43 Posts	no, not checked that page, but i've checked Wolfgang's latest C9C30 file against my summary and they are equal!

2009-07-30, 15:46	#8
Greebley May 2009 Dedham Massachusetts USA 3×281 Posts	Ok, the sequences mentioned are now in the database to their merges and are no longer open-ended.

2009-07-30, 19:18	#10
Greebley May 2009 Dedham Massachusetts USA 3×281 Posts	19410 and 42800 should now be the only two sequences under 1 million that are open ended and don't appear on the summary page. However both are in the list as prime and merged and it is only a matter for me to run the seqs up to their resolution. At that point the db and summary list should agree barring only a very recent submission of a terminated sequence to the db that is not yet in the summary. I calculated this automatically and get the same results, so I have high confidence there are no missing open sequences once I prove 19410 and 42800 terminate.