Now i understand why. Nevertheless what is the best way with Pari to know if certain numbers are perfect powers??? ? for(n=1,30,print([n,floor(sqrtn(n^3,3))]))...
... Thank you Cino. I did not know ispower existed.It works (i have tried it) on my Pari. But it seems that there is no documentation on it on my refcard.pdf...
... I have repeated the operation and i get exactly the same result as those two up there. I first thought that the oscillation of the results (n+/- epsilon)...
3 divide the sequence for n=0 so 3 divide the sequence for every n=0 mod 2 (even n´s) (using Fermat theorem) 3 divide the sequence for n=1 (16*13-1=207) so 3...
Primes can be represented as a^2-b^2=(a+b)(a-b) if we choose a-b=1 and a+b=p so a=(p+1)/2 and b=(p-1)/2 so a and b are consecutive integers one odd and another...
I have posted the latest distribution of PFGW at http://openpfgw.svn.sourceforge.net/viewvc/openpfgw/pfgw_win_1.3_20090620.zip?view=log From the Release Notes:...
I have no difficulty. I d/l'd it from a different computer than the one I uploaded from and it works fine on the second computer. The zip file should be...
... I have just downloaded this new version of pfgw and i get this tiny problem: the help files (doc files) when opened with Notepad can only be read in...
Hello Mark, on a second PC was the same problem. Please, can you upload the zip-file once more to www.sendspace.com and send me the download link ? It is an...
... That isn't exactly helpful. I need to know what you were doing when it crashed. What were you testing and with what paramters. [Non-text portions of this...
PFGW 1.3 for Windows Released!!! ... "That isn't exactly helpful. I need to know what you were doing when it crashed. What were you testing and with what...
... My computer works without errors. No crash. PC: Phenom X4, WIN XP 32bit BWT, nice version ! PRPing for normal numbers is 3% faster and for special numbers...
there's no sacrifice in the range of the variable 'k', either. I created a small Visual Basic 6.0 program that allows the user to set up his/her parameters,...
Is there an algorithm to solve this form of an equation (ax+b)/(cx+d)==>Numerator is divisible for what integral value of x. Certain class of factorization...
Hi David, Thanks for your help to show that the "law of small numbers" can start with big numbers ! And, next time I have some idea, I'll try to test a little...
Hello I am looking for information/outcomes about 2.14159265 (pi-1). Does 2.14159265 have anything to do with primes? Search engines don't seem to have an...
Let P(i) be the set of all the primes whose squares do not exceed i. For an integer j and a set of primes J, Let K(j, J) be the number of n in [1, j] such...
I have searched quite extensively on the internet for some site that would have information on whether or not there exists a closed form expression or...
My Goal is to use the new PFGW version 1.3 for searching Cunningham Chains 2nd kind. I tried using new version 1.3 with input.txt and the program crashes. Here...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
