apollo2011 Posted December 14, 2003 Share Posted December 14, 2003 The Largest prime number, with over 2 million digits, was found on a Michigan State student's PC. Just shows you what PCs can do now days! Read the article now: Largest Prime Number Found (Updated Link) Link to comment Share on other sites More sharing options...
wolfson Posted December 14, 2003 Share Posted December 14, 2003 Ok that link is not working for me and how about looking at Mersenne Primes, as if you discover the next you get $10000. I did a post about them cant quite remember the post name maybe formula??? Link to comment Share on other sites More sharing options...
Dave Posted December 14, 2003 Share Posted December 14, 2003 I dread to think how long it took to confirm that number was prime. I don't really see the point in it anyway to be honest, there's a lot of prime numbers about It's like finding pi to x trillion digits, completely pointless. Link to comment Share on other sites More sharing options...
wolfson Posted December 14, 2003 Share Posted December 14, 2003 And that is not the larget prime, because the latest Mersenne prime is at over 6million digits...i would research if i was you. try http://www.mersenne.org/prime.htm Link to comment Share on other sites More sharing options...
Dave Posted December 14, 2003 Share Posted December 14, 2003 I don't get why someone would pay $10k to find another Mersenne prime. Seems a bit of a waste of money to me. Link to comment Share on other sites More sharing options...
apollo2011 Posted December 14, 2003 Author Share Posted December 14, 2003 Hmm... Try this link: New Link Edit: The link is working now. You can go to the article from above or my first post. Enjoy! Link to comment Share on other sites More sharing options...
Dave Posted December 14, 2003 Share Posted December 14, 2003 I think you two are talking about the same number from a cursary glance of the article Link to comment Share on other sites More sharing options...
apollo2011 Posted December 14, 2003 Author Share Posted December 14, 2003 We are. I misread the article. It is 6,xxx,xxx digits which is 2 MILLION digits longer than the previous known prime number. Link to comment Share on other sites More sharing options...
wolfson Posted December 14, 2003 Share Posted December 14, 2003 Its over two million digits larger than the previous not over two million digits, hence 6million digits and its a Mersenne Prime. And you get $10K for that, i did some research into Mersenne its intresting all about exponent, obviously Dave would not find it intresting lol. Link to comment Share on other sites More sharing options...
Dave Posted December 14, 2003 Share Posted December 14, 2003 I hate number theory generally because of my absolutely awful Foundations course at university this term Link to comment Share on other sites More sharing options...
wolfson Posted December 14, 2003 Share Posted December 14, 2003 Awful isnt good! Link to comment Share on other sites More sharing options...
apollo2011 Posted December 14, 2003 Author Share Posted December 14, 2003 dave: Then your in the wrong forum! (The Math Forum that is) Link to comment Share on other sites More sharing options...
Dave Posted December 14, 2003 Share Posted December 14, 2003 Nah, I love mathematics, it's just this term's been awful as far as work goes. I wouldn't be here if I didn't like maths Link to comment Share on other sites More sharing options...
wolfson Posted December 14, 2003 Share Posted December 14, 2003 You can see clearly (blatancy) that Dave has enthusiasm towards mathematics. I hope you do well Dave you should! Link to comment Share on other sites More sharing options...
Rasori Posted December 15, 2003 Share Posted December 15, 2003 Finding pi to the x trillonth digit is useless, you say? Why? My goal in life is to prove that pi does indeed end! I just have to remember how you get pi in the first place lol. Link to comment Share on other sites More sharing options...
Dave Posted December 15, 2003 Share Posted December 15, 2003 Bit pointless if it's an irrational number Link to comment Share on other sites More sharing options...
wolfson Posted December 15, 2003 Share Posted December 15, 2003 And just incase you don't know what an irrational number is its a number that cannot be expressed as a fraction for any integers p and q. Link to comment Share on other sites More sharing options...
Dave Posted December 15, 2003 Share Posted December 15, 2003 (a fraction p/q) Link to comment Share on other sites More sharing options...
apollo2011 Posted December 15, 2003 Author Share Posted December 15, 2003 dave: Very True! Man build computers to help them and then uses them to do stupid things like finding the largest prime number... Link to comment Share on other sites More sharing options...
Radical Edward Posted January 10, 2004 Share Posted January 10, 2004 Rasori said in post #15 :Finding pi to the x trillonth digit is useless, you say? Why? My goal in life is to prove that pi does indeed end! I just have to remember how you get pi in the first place lol. oh pi is irrational and does not end. that is provable, just like sqrt(2) does not end, and provably so. this is a lovely little proof, so I hope you don't mind if I indulge myself, it is a proof by contradiction assume that sqrt2 is rational, then it can be represented by a fraction n/m: where n and m have no common factors (or we can just cancel them out) sqrt2=n/m now square both sides and move m over to the other side 2m^2 = n^2 now since the number on the left is even, the number on the right must be even also. we know that the square of an odd number is in itself an odd number, so this means that n must be even, and hence can be divided by two, or represented as 2 multiplied by an odd number, let us call this number k: n=2k and substitute: 2m^2 = (2k)^2 = 4k^2 now we have m^2=2k^2 which means than m must be even. however this cannot be the case, since we already pointed out that n and m have no common factor, because if they did, we could just cancel this factor out. but from this result we can see than n and m must be even (i.e. they have a common factor of 2). this is a contradiction, so the original premise that sqrt2 = n/m must be false. and so sqrt2 is not a rational number QED. Link to comment Share on other sites More sharing options...
JaKiri Posted January 10, 2004 Share Posted January 10, 2004 The proof that pi is irrational is probably best expressed as coming from the MacLaurin series, but that would require too much explanation. Link to comment Share on other sites More sharing options...
NSX Posted January 11, 2004 Share Posted January 11, 2004 nice proof rad ed. I did that in math last year too What does QED mean though? At the end of your post. Link to comment Share on other sites More sharing options...
JaKiri Posted January 11, 2004 Share Posted January 11, 2004 Quad Erat Demonstrandum Basically, 'As I have shown' (it's an example of gerundival attraction in actual fact, so means something more complicated, but that translation will do) Link to comment Share on other sites More sharing options...
bloodhound Posted April 14, 2004 Share Posted April 14, 2004 I did foundations of pure mathematics module and currently doing doing MAthematical Structures Module. Its terrible. really hard. doing cyclic groups and integer arithmetic and am completely baffeled. Link to comment Share on other sites More sharing options...
hamzah Posted April 19, 2004 Share Posted April 19, 2004 I received a newsletter from Mresenne a few months ago that stated: On November 17th GIMPS member Michael Shafer at Michigan State University proved 2^20996011-1 prime. At over 6.3 million digits it is easily the largest known prime number, beating GIMPS' 2 year old record of just over 4 million digits. Link to comment Share on other sites More sharing options...
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