Prime Factoring Large Numbers
Date: 03/28/2003 at 14:18:26 From: Sajid Subject: Prime factorization What are the prime factors of 5515596313? We have been trying to solve this for a long time, but always get stuck. It's such a big number that even spending days on it, we couldn't do it. We'll all be thankful, if you could please help us.
Date: 03/28/2003 at 18:13:43 From: Doctor Terrel Subject: Re: Prime factorization Dear Sajid, That's a big number! No wonder you've been having troubles. You're in luck. Nowadays there are many computer programs available online that will tell you whether or not a big number is prime. Other programs even give you the prime factorization as well. I'm lucky to have a simple program on my hard drive that is powerful enough for many numbers like yours. So I just entered it and pushed a button, and bingo! there it was - 71593 * 77041. Let me give you the URLs of two places you can go to find the factorizer programs yourself. Factor Applet - Jack Brennen http://www.brennen.net/primes/FactorApplet.html Factoris - WWW Interactive Mathematics Server http://wims.unice.fr/wims/en_home.html (choose Factoris to get to the page that does the factoring) Good luck. - Doctor Terrel, The Math Forum http://mathforum.org/dr.math/
Search the Dr. Math Library:
Ask Dr. MathTM
© 1994-2013 The Math Forum