mersenneforum.org  

Go Back   mersenneforum.org > Extra Stuff > Miscellaneous Math

Reply
 
Thread Tools
Old 2017-12-19, 00:14   #12
chalsall
If I May
 
chalsall's Avatar
 
"Chris Halsall"
Sep 2002
Barbados

33·192 Posts
Default

Quote:
Originally Posted by xilman View Post
Hardly anything which is trivial is also worth pointing out. Indeed, that could serve as a definition of "trivial".
I have learnt the hard way that sometimes language is a barrier.

The use of the word "nominal", for example.
chalsall is offline   Reply With Quote
Old 2017-12-19, 00:20   #13
a nicol
 
Nov 2016

29 Posts
Default

Quote:
Originally Posted by Batalov View Post
You don't.*

The method is: run Prime95 with the OutputIterations (iirc) changed...
If you want the same for s0 = 10, set InitialLLValue=10 in prime.txt.
If you want the same for s0 = 2/3, set InitialLLValue=23 in prime.txt

Just go and read there -
http://mersenneforum.org/showpost.ph...9&postcount=30

____
* Google for "Now that you've found it, it's gone / Now that you feel it, you don't".
No, there is no hidden meaning in this footnote. Most of the time, the point of that poem is true - for everyone.
There's only one method?
a nicol is offline   Reply With Quote
Old 2017-12-19, 00:22   #14
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

20C016 Posts
Default

Quote:
Originally Posted by a nicol View Post
Why, mathematically speaking, do these signs vary depending on the start value? Seems like there's a very large dense class theoretical answer to that. Maybe someone could help simplify the answer with some kind of visual analogy?
it's how they are defined in that paper. or that's the simple answer. maybe it has to do with the difference at that point in the test being a specific remainder mod another value we don't know ( or at least I don't).

Last fiddled with by science_man_88 on 2017-12-19 at 00:24
science_man_88 is offline   Reply With Quote
Old 2017-12-19, 00:28   #15
a nicol
 
Nov 2016

29 Posts
Default

Quote:
Originally Posted by science_man_88 View Post
it's how they are defined in that paper. or that's the simple answer. maybe it has to do with the difference at that point in the test being a specific remainder mod another value we don't know ( or at least I don't).
Maybe the answer will become apparent to someone in some small part via referencing integer sequences. Certainly the many thousands of published papers that reference the OEIS as a data point think this is a worthwhile approach to novel mathematical research. Not some here, apparently.
a nicol is offline   Reply With Quote
Old 2017-12-19, 00:32   #16
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

26·131 Posts
Default

Quote:
Originally Posted by a nicol View Post
Maybe the answer will become apparent to someone in some small part via referencing integer sequences. Certainly the many thousands of published papers that reference the OEIS as a data point think this is a worthwhile approach to novel mathematical research. Not some here, apparently.
I think they are just trying to be more rigorous, than randomly guessing. theory on Mersenne primes ? might be a nice thread for you to read for light reading. you can do other versions of LL as well it's just not really helpful computationally.
science_man_88 is offline   Reply With Quote
Old 2017-12-19, 00:42   #17
a nicol
 
Nov 2016

29 Posts
Default

Quote:
Originally Posted by science_man_88 View Post
I think they are just trying to be more rigorous, than randomly guessing. theory on Mersenne primes ? might be a nice thread for you to read for light reading. you can do other versions of LL as well it's just not really helpful computationally.
Cataloguing novel sequences and coincidental connections is a valid research approach period imo. That is the whole premise of the OEIS.
a nicol is offline   Reply With Quote
Old 2017-12-19, 00:44   #18
chalsall
If I May
 
chalsall's Avatar
 
"Chris Halsall"
Sep 2002
Barbados

33·192 Posts
Default

Quote:
Originally Posted by science_man_88 View Post
I think they are just trying to be more rigorous, than randomly guessing.
A sincere question SM88: Why do you seem so very comfortable just guessing?
chalsall is offline   Reply With Quote
Old 2017-12-19, 00:47   #19
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

100000110000002 Posts
Default

Quote:
Originally Posted by a nicol View Post
Cataloguing novel sequences and coincidental connections is a valid research approach period imo. That is the whole premise of the OEIS.
there are infinitely many starting values for the LL test in it's different forms.

https://oeis.org/A018844 ( the minimal start values using the usualy square and subtract 2 method.)

https://oeis.org/A084765 without the starting 1 just one of infinitely many sequences using the square times 2 and then minus 1 version.
science_man_88 is offline   Reply With Quote
Old 2017-12-19, 00:48   #20
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

26·131 Posts
Default

Quote:
Originally Posted by chalsall View Post
A sincere question SM88: Why do you seem so very comfortable just guessing?
because that's how most sciences work ( not math sadly) you start out with a hunch show it's implications ( something I fail at doing) and see if it's sturdy.
science_man_88 is offline   Reply With Quote
Old 2017-12-19, 09:53   #21
a nicol
 
Nov 2016

358 Posts
Default

Quote:
Originally Posted by Batalov View Post
You don't.*

The method is: run Prime95 with the OutputIterations (iirc) changed...
If you want the same for s0 = 10, set InitialLLValue=10 in prime.txt.
If you want the same for s0 = 2/3, set InitialLLValue=23 in prime.txt

Just go and read there -
http://mersenneforum.org/showpost.ph...9&postcount=30
Thank you, I wasn't aware that table existed (hard to search for).

If S[0]=4 is 14,194,37634.. What is the sequence for S[0]=2/3?
a nicol is offline   Reply With Quote
Old 2017-12-19, 11:34   #22
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

26·131 Posts
Default

Quote:
Originally Posted by a nicol View Post
Thank you, I wasn't aware that table existed (hard to search for).

If S[0]=4 is 14,194,37634.. What is the sequence for S[0]=2/3?
how is 2/3 defined in a modular ring ... that will give you your answer.
science_man_88 is offline   Reply With Quote
Reply



Similar Threads
Thread Thread Starter Forum Replies Last Post
20th Test of primality and factorization of Lepore with Pythagorean triples Alberico Lepore Alberico Lepore 43 2018-01-17 15:55
Basic Number Theory 13: Pythagorean triples and a few Diophantine equations Nick Number Theory Discussion Group 2 2016-12-18 14:49
Lucas-Lehmer Dougal Information & Answers 9 2009-02-06 10:25
Pythagorean triples Rokas Math 3 2005-01-02 03:50
Pythagorean Triples jinydu Puzzles 6 2003-12-13 10:10

All times are UTC. The time now is 08:51.


Tue Jul 27 08:51:00 UTC 2021 up 4 days, 3:19, 0 users, load averages: 1.69, 1.65, 1.61

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.