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primenumbers · Prime numbers and primality testing

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  • Category: Number Theory
  • Founded: Dec 27, 2000
  • Language: English
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Messages 17896 - 17925 of 25072   Newest  |  < Newer  |  Older >  |  Oldest
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17925 Norman Luhn
nluhn Send Email
Apr 9, 2006
10:46 pm
Hello all ! I have a request to all of you, and please don't laugh. What do you think about a project to find a prime 6-tuplet>1100 digits ? My calculate, we...
17924 jcmtnez90 Send Email Apr 9, 2006
10:12 pm
... or ... requierement) ... think ... you ... *Sorry I forget to put " the sum or differences between them" as Phil Carmody said, forgive me for my mistake....
17923 Phil Carmody
thefatphil Send Email
Apr 9, 2006
8:41 pm
... Pb+Pa is not the difference between Pa and Pb. ... Ditto. ... Care to disambiguate what you really mean before we invest effort in the wrong one. Did you...
17922 jcmtnez90 Send Email Apr 9, 2006
8:25 pm
Looking at prime number you can see this relationship: Conjeture: "Any prime number can be written as the product of two primes plus or minus the difference...
17921 mikeoakes2@...
mikeoakes2 Send Email
Apr 8, 2006
6:18 pm
... If we give up the restriction to *odd* integers, it is interesting to find that some (even) numbers can't be represented. This is fully in accord with the...
17920 Mark Underwood
marku606 Send Email
Apr 8, 2006
4:25 pm
... in ... has indeed been proved (several centuries ago). ... Yes, a guru has just presented me with the proof. He has also conjectured that 1a^2 + 2b^2 +...
17919 mikeoakes2@...
mikeoakes2 Send Email
Apr 8, 2006
3:26 pm
mark.underwood@... ("Mark Underwood") wrote:- ... Legendre proved that all positive odd integers can be represented in that form - see e.g. page 3 of:...
17918 mikeoakes2@...
mikeoakes2 Send Email
Apr 8, 2006
9:19 am
... An interesting line of inquiry, Mark. Just 3 points: 1. For these "Waring-type" problems, the answer as to whether or not a *prime* is representable in a...
17917 Mark Underwood
marku606 Send Email
Apr 7, 2006
7:39 pm
It appears likely that every prime can be written as the sum 1a^2 + 2b^2 + 3c^2, for a,b,c >= 0. For instance the prime 61 can be expressed in two such ways: ...
17916 Robert
robert44444uk Send Email
Apr 7, 2006
7:27 pm
Has anyone looked at prime chains, parallel to Cunningham chains, of the form 2^n+/-k? Such a chain would be prp for fixed k, with n in the chain increasing by...
17915 Mark Underwood
marku606 Send Email
Apr 5, 2006
7:31 pm
... <mark.underwood@...> wrote:> ... Correction: 9x^2 + 3x + 41 is prime from x=-13 to x=26 Mark (no alcohol required to goof up) Underwood...
17914 Mark Underwood
marku606 Send Email
Apr 5, 2006
5:52 pm
... Another example: Consider the (already known) prime poly 36x^2 - 810x + 2753 which produces 45 consecutive primes (including negatives) from x=0 to x=44. ...
17913 Mark Underwood
marku606 Send Email
Apr 5, 2006
3:17 pm
... A modification is in order. Any prime sequence which is found in ax^2 + sx + t where s>=2a can be found in the simpler ax^2 + bx + c where b <= a and both...
17912 Kermit Rose
kermit1941 Send Email
Apr 5, 2006
1:56 am
Message: 1 Date: Sun, 02 Apr 2006 17:11:26 -0000 From: "gordon_as_number" <gordon_as_number@...> Subject: primes of polynomials If you want to prove a...
17911 Jean Penné
jpyah2001 Send Email
Apr 4, 2006
6:29 pm
... Yes, indeed! I am sorry for this too vague info... ... revived. I hope (and think) it will be the case! ... I know that! ... possibly... ... entry:- ... ...
17910 mikeoakes2@...
mikeoakes2 Send Email
Apr 4, 2006
5:35 pm
... That's great news, Jean! I had a job to find it from your instructions "on the GIMPS directory". Using google, I homed in on the file LLR370.zip at this...
17909 Jean Penné
jpyah2001 Send Email
Apr 4, 2006
5:28 pm
I realized that a user's guide was more and more lacking for LLR... You can find a link on it in my personal WEB page : ...
17908 Jean Penné
jpyah2001 Send Email
Apr 3, 2006
7:11 pm
Hi All, The new LLR 3.7.0 Version is now available on the GIMPS directory! It contains as a new important feature an efficient primality proving test for the...
17907 gulland68 Send Email Apr 3, 2006
1:36 pm
If you could prove that the convergence upon Li(x) (or even x/log(x)) becomes increasingly such (i.e., the more convergent it becomes, the more convergent it...
17906 Phil Carmody
thefatphil Send Email
Apr 2, 2006
6:44 pm
... First you need to specify the ring in which you're working. You do not do so. One cannot assume Z[x] given that many of the examples we've seen have been...
17905 gordon_as_number
gordon_as_nu... Send Email
Apr 2, 2006
5:56 pm
Only a comment. If you want to prove a polynomials P(x) is prime, isnt enough to determine the assoiated roots. E.g. P(x)=x^2+2 The number N is P(x) which can...
17904 mikeoakes2@...
mikeoakes2 Send Email
Apr 2, 2006
7:50 am
... As you know, Gauss was the first to establish that the number of primes < x, pi(x), is approximately equal to the logarithmic integral of x, Li(x), for...
17903 aldrich617 Send Email Apr 2, 2006
2:19 am
parisize = 80000000, primelimit = 2000000 C=1 5*x^4 - 10*x^3 + 10*x^2 - 5*x + 1 5*x^4 - 10*x^3 + 50*x^2 - 45*x + 11 5*x^4 - 10*x^3 + 770*x^2 - 765*x + 191 ...
17902 gulland68 Send Email Apr 2, 2006
1:10 am
Can anyone explain to me in layman's terms what the proof of the Riemann hypothesis would say about the distribution of primes that the Prime Number Theorem...
17901 Robert
robert44444uk Send Email
Apr 1, 2006
1:20 pm
... Oops, how did I get this muddled? Too many beers when I wrote the response most probably. I meant to say: k^p-(k-1)^p, where p is prime Regards Robert...
17900 Patrick Capelle
conjectureprime Send Email
Apr 1, 2006
12:03 pm
... The zoo of prime numbers did not accustom us to so much simplicity and absence of special constraints. In spite of similar formal aspects, we are far here...
17899 Patrick Capelle
conjectureprime Send Email
Apr 1, 2006
11:42 am
... Thank you, Jens, for this contribution. I would like to give here some comments : 1. There is effectively an error in this mathworld's page. I am going to...
17898 Bob Gilson
bobgillson Send Email
Apr 1, 2006
11:31 am
And the graphics by AFOOL and the references to Duncan Dumber, the Banana Slug University, are surely all a dead giveaway. ... The date of publication appears...
17897 Ronny Edler
ronny_edler Send Email
Apr 1, 2006
9:14 am
... The date of publication appears suspicious to me... :) Ronny...
17896 Phil Carmody
thefatphil Send Email
Apr 1, 2006
8:56 am
Firstly I missed this one from last month: http://blog.sciencenews.org/2006/03/gauss_prime_tables_1.html (which contains exactly what it says in the URL). But...
Messages 17896 - 17925 of 25072   Newest  |  < Newer  |  Older >  |  Oldest
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