Composite NumbersDate: 1/30/96 at 22:24:53 From: Anonymous Subject: Composite Numbers What are Composite Numbers? This is a research project, and I have tried all my dictionaries, even on the Internet, and can't find it. I am 10 years old. Date: 3/26/96 at 21:3:15 From: Doctor Jodi Subject: Re: Composite Numbers Hi there! Do you know what a PRIME number is? A prime number has exactly 2 positive factors: 1 and itself. (A factor, by the way, is a number which, multiplied with another factor, gives you the number in question. You can also say that the number divided by a factor has to have NO REMAINDER - that is, it has to divide evenly. Here is an example: the factors of 12 are 1, 2, 3, 4, 6, 12 (If you'd like a better explanation, just ask!) The first few prime numbers are 2, 3, 5, 7 Can you test other numbers to see if they are prime? A COMPOSITE number has more than 2 factors (one way to remember this: composite means being composed, or made up of, several parts) So, numbers like 12 (see its factors above) are called composite. Can you make a list of the first few composite numbers? How could you show that they're composite? (1 and 0, says Dr. Pat, are freaks. When I asked him what they are called, he said, 1 and 0. So I can't remember if they have been given "special" names.) Hope this helps! Write us back with more questions or if you want to know more.... -Doctor Jodi, The Math Forum |
Search the Dr. Math Library: |
[Privacy Policy] [Terms of Use]
Ask Dr. Math^{TM}
© 1994-2015 The Math Forum
http://mathforum.org/dr.math/