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Messages 19839 - 19869 of 21093   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Simplify | Expand   (Group by Topic) Author Sort by Date ^
19839
For those interested, exhaustive searching for contradiction to 2nd HL conjecture has reached 2303. All maximum density patterns have been recorded for widths...
Tom
thoeng
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Feb 1, 2009
5:57 pm
19840
I was unable to find any web references other than Dirichlet's theorem. Is the following statement obviously deducible from it or from some other theorem or...
w_sindelar@...
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Feb 5, 2009
2:53 pm
19841
Hi, The sum of the digits times the position of the digits in n appears to produce the integers which include the prime numbers. Let n = d(1)d(2)...d(n) where...
Cino Hilliard
hillcino368
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Feb 6, 2009
10:52 pm
19842
... That's unconventional. Normally indices will match the power, so d(n)*10^n + ... + d(0). ... Ug. That's not what I imagined. I imagined the above in my...
Phil Carmody
thefatphil
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Feb 7, 2009
8:31 am
19843
... From: Maximilian Hasler <maximilian.hasler@...> Date: Sat, Feb 7, 2009 at 7:25 AM Subject: Re: [PrimeNumbers] Sum of products of digit and their ...
Maximilian Hasler
maximilian_h...
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Feb 7, 2009
12:27 pm
19844
Hi Maximillian and others, Sorry for the sloppy first post. I confused n with the number of digits of n.The iteral n is so often used as an index or general...
cino hilliard
hillcino368
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Feb 7, 2009
6:51 pm
19845
Hi group, I know this group is not really the right place for the following questions. I posted it to openpfgw group first but I had no answer. I also posted...
j_chrtn
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Feb 11, 2009
5:01 pm
19846
Hi, prime folks, Primes from permutation of prime digits ======================================= For each prime p, define perm(p) = number of permutations of...
zak seidov
zakseidov
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Feb 12, 2009
7:21 am
19847
... first case of perm(p)>10^4 is perm(100123697)=10042 and of course i mean "distinct primes", otherwise perm(11)=2 - curious enough. maximal perm for first...
zak seidov
zakseidov
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Feb 12, 2009
3:59 pm
19848
... 64 ... HNY Jarek and other prime fanatics. I guess there are some APs on the page http://www.primegrid.com/stats_ap26.php (including an AP25) that ought to...
Paul Underwood
paulunderwooduk
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Feb 13, 2009
2:07 pm
19849
The 3 AP24 and the AP25 found by PrimeGrid AP26-Search are rediscoveries of known results. One more known AP24 is going to be rediscovered. There are 5 more...
Jaroslaw Wroblewski
jarek372000
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Feb 13, 2009
3:29 pm
19850
... Interesting. It's surprising to me that the number of odd digits barely outnumbers the number of even digits in these primes with maximum perms. Must be a...
Mark Underwood
marku606
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Feb 14, 2009
12:50 am
19851
... Scrap that. It's not that surprising to me anymore. :) Mark...
Mark Underwood
marku606
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Feb 14, 2009
1:10 am
19852
Hi all: I am working on a number theory problem and am calculating billions and billions of iterations related to the problem to get an understanding of how...
bill2math
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Feb 14, 2009
8:58 am
19853
... The first thing to do is to work on improving your algorithm. Try to ensure that you don't calculate anything expensive twice, and deduce things from...
Phil Carmody
thefatphil
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Feb 14, 2009
11:30 am
19854
I prefer zak(1123465789) = 152526 to zak(1023345679) = 156227 since the former does not invoke leading zeros. David...
David Broadhurst
djbroadhurst
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Feb 14, 2009
2:39 pm
19855
You are sending me digests as requested, but a number of individual messages are still coming thru as well. If possible, would appreciate your attention to...
Martin Aaronson
martin_aaronson
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Feb 14, 2009
8:32 pm
19856
... Thereafter, 11-digit primes become somewhat memory-intensive, in my simple-minded implementation, using GP's "vecsort". Might Zak and/or Maximilian confirm...
David Broadhurst
djbroadhurst
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Feb 15, 2009
4:17 am
19857
... yes: zak(10123457689) %1 = 2808500 2808500/2 \\ (symmetry factor for exchange of the two 1's) %2 = 1404250 Maximilian...
Maximilian Hasler
maximilian_h...
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Feb 15, 2009
2:18 pm
19858
Here is the new AP20 with the smallest known start. 566547019 + 846627559*19#*n, n=0,..,19 (Aleksander Parkitny, BOINC@Poland, Jaroslaw Wroblewski) The credit...
jarek372000
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Feb 19, 2009
8:28 am
19859
I just got another prime 18-tuplet: 44453357465442632103684223 + d, d = 0, 4, 6, 10, 16, 18, 24, 28, 30, 34, 40, 46, 48, 54, 58, 60, 66, 70 (26 digits, Feb 20,...
jarek372000
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Feb 20, 2009
5:37 am
19860
... Congratulations! An 18-tuplet is very impressive and this is your fifth. http://users.cybercity.dk/~dsl522332/math/simultprime.htm is updated. -- Jens...
Jens Kruse Andersen
jkand71
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Feb 20, 2009
12:41 pm
19861
Here is the new AP21 with the smallest known start. 124701216737 + 9986827*19#*n, n=0,..,20 (Ryszard Walczak, BOINC@Poland, Jaroslaw Wroblewski) The credit...
jarek372000
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Feb 22, 2009
4:14 am
19862
Hello everybody:   Having used a nice observation, I have proved the following statement using Fermat's last  theorem: the nth root of 2 is not rational for...
Sam Shahrokhi
sam_jenetik26
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Feb 22, 2009
7:24 pm
19863
... You were lucky to be at high school after Fermat's last theorem was proven :-) http://www.mathpath.org/proof/nthroot.irrat.htm gives the argument in Hardy...
David Broadhurst
djbroadhurst
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Feb 22, 2009
9:12 pm
19864
... Congrats. http://users.cybercity.dk/~dsl522332/math/aprecords.htm is updated. I have added tables with record histories for the smallest known difference, ...
Jens Kruse Andersen
jkand71
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Feb 22, 2009
10:51 pm
19865
Hello all: Let p and q two distinct odd prime numbers. p and q are twin primes if and only if (p+q)/(p-q) is integer. --> trivial <-- A= (p+q)/(p-q) Integer...
Sebastian Martin Ruiz
s_m_ruiz
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Feb 24, 2009
6:01 pm
19867
Hello: Let p and q odd prime numbers p>q by Dirichlet theorem exist t1 and t2 positives integers that  p+t1(p-q) and q+t2(p-q) are primes.Can someone prove...
Sebastian Martin Ruiz
s_m_ruiz
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Feb 26, 2009
7:15 pm
19868
Wouldn't this imply the twin prime conjecture ? (for p=q+2 it would imply existence of another twin prime pair at (q,p)+2t, and then so on) Regards, Maximilian...
Maximilian Hasler
maximilian_h...
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Feb 27, 2009
3:43 am
19869
Twin prime conjecture is precisely what I am trying to prove with this conjecture. We can prove by Dirichlet Theorem that exist the same t?We know by ...
Sebastian Martin Ruiz
s_m_ruiz
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Feb 27, 2009
7:58 am
Messages 19839 - 19869 of 21093   Oldest  |  < Older  |  Newer >  |  Newest
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