Results 1 to 2 of 2

Thread: New/Interesting

  1. #1
    Newbie
    Joined
    Aug 2017
    From
    Coquitlam, bc
    Posts
    1

    New/Interesting

    I'm new to this forum but I really like math and study it pretty much every day. I came across something about primes that's interesting:
    Elementary prime test: If no prime is less then or equal to sqrt(m), divides m, then m is a prime.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Apr 2005
    Posts
    19,462
    Thanks
    2893

    Re: New/Interesting

    Yes, that is true and it is interesting. It is true, of course, because if n is a composite number with factors a and b, n= ab, one of the factors must be less than or equal to sqrt(n) and the other larger or equal.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Very Interesting Sum. Need Help !
    Posted in the Calculus Forum
    Replies: 16
    Last Post: Nov 17th 2015, 01:16 PM
  2. Is this interesting?
    Posted in the Number Theory Forum
    Replies: 0
    Last Post: Oct 7th 2012, 07:12 PM
  3. Looks interesting
    Posted in the Math Forum
    Replies: 0
    Last Post: Apr 23rd 2010, 08:46 AM
  4. Interesting one!
    Posted in the Algebra Forum
    Replies: 2
    Last Post: Nov 13th 2008, 06:46 AM
  5. Interesting X
    Posted in the Geometry Forum
    Replies: 1
    Last Post: Jun 16th 2008, 04:44 PM

/mathhelpforum @mathhelpforum