Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #2 20110228 12:29:56
Re: prime numbers `I read one before that says . Last edited by FERMAT'S (20110228 12:31:03) #3 20110228 12:48:32
Re: prime numbers `Hi; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #7 20110228 17:42:04
Re: prime numbers `That is what I can not give you. The fermat's method on the Wikipedia page is well known, the one you are asking about looks like it but I am not sure. It could be a modification of the standard fermats method, there are a couple of improvements. But I do not recognize it. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #9 20110228 17:49:05
Re: prime numbers `Hi;
Are you saying divide X by all the squares between 2 and y? Or all the primes form 2  y? Which is just trial division. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #10 20110301 23:59:48
Re: prime numbers `Hi, prime numbers are basically numbers which you can only divide 1 and itself into. E.G 7 is a prime number, 2 is a prime number you can decide easily if a number is prime by using a sieve of eratosthenes. (putting numbers on a grid and crossing off the even numbers and the ones that can be divided by other numbers) Remember though that 1 is not a prime and 2 is! Hope I helped a little bit. I am colourful and unique no doubt about it! #11 20110302 22:44:25
Re: prime numbers `The quickest way to know whether a number is prime aside from using the sieve of eratosthenes method is: #12 20120809 20:07:42
Re: prime numbers `Hi tangent; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #13 20120810 02:53:00
Re: prime numbers `Hi y'all Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional). LaTex is like painting on many strips of paper and then stacking them to see what picture they make. 