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Old 2011-08-18, 04:39   #1178
wblipp
 
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Yes, 1100000000003937045 is the factordb id was talking about having failed to get trial factoring. If you click "Primality" and then click "N-1" you get this. But it is easy to see that every prime up to 2557 except 19 divides this. I think it's a bug that this got into the factordb without accurate trial factoring.
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Old 2011-08-18, 08:25   #1179
smh
 
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Quote:
Originally Posted by cmd View Post
"Lark's brother" often make use of mirror ...
You should also use fishing line behind you to remove your pants, but the first 'Remember to remove "the fish"

|°|
CMD, you've been warned before and i will remove any of your further nonsense posts in this thread.
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Old 2011-08-18, 09:30   #1180
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Quote:
Originally Posted by wblipp View Post
I think it's a bug that this got into the factordb without accurate trial factoring.
There's nothing special about this number; a lot of the recent 7x digit composites had a largest prime factor of only 5 or 6 digits, so obviously some method of inserting numbers to the db doesn't do any checking at all.
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Old 2011-08-21, 09:25   #1181
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This page has a typo; "composize" should be "composite".
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Old 2011-08-21, 14:14   #1182
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Quote:
Originally Posted by Random Poster View Post
This page has a typo; "composize" should be "composite".
The Status page got another one:

The point under "The database is running on" says: "Power consumpion".
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Old 2011-08-21, 19:14   #1183
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Syd, what ist database's oldest (smallest id) unfactored composite?
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Old 2011-08-21, 19:25   #1184
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http://factordb.com/index.php?id=1000000000000001061 seem a good candidate
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Old 2011-08-21, 20:48   #1185
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Quote:
Originally Posted by firejuggler View Post
Not for a long time, see NFS@Home.
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Old 2011-08-21, 21:12   #1186
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i think that the sieving will take a few more weeks/months, therefore comply with the 'oldest' composite;p
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Old 2011-08-22, 01:47   #1187
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Exclamation Something's broken....

I was looking at some of the longest sequences and ran acorss a problem with one. 933436 doesn't display anything, just a blank screen (althogh it does take ~8800 quesries to do it).

I got it to "display last element" once, and it reported:
Quote:
Originally Posted by factordb
Error on number 105989556098056466581697879875892687048953224897793946376047041572910440644406075202864343735423530347128160400
Searching on that number shows it as FF, but the factorization is wrong:
Code:
FF 111 (show) 1059895560...0<111> = 2^4 · 5^2 · 29510540564780279914245519428917891801999<41> · 1340002219...3<54>
Pasting it into Dario's applet shows this factorization:
Quote:
Originally Posted by Alpertron
105989556098056466581697879875892687048953224897793946376047041572910440644406075202864343735423530347128160400
= 2 ^ 4 x 5 ^ 2 x 46073 x 1454366651 (Curve 1) x
29510540564780279914245519428917891801999 (Curve 14) x
134000221958505746224764118830141984940667012130018613
A little bit of a difference.....

Last fiddled with by schickel on 2011-08-22 at 01:47 Reason: Added tags for sequence
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Old 2011-08-22, 02:41   #1188
wblipp
 
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More Broken

Here is a simpler case that is broken

677^7-1 shows as 20 digits and fully factored

http://factorization.ath.cx/index.php?query=677^7-1

But the factorization shown is for 677-1
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