Summary of properties of numbers
Last updated: 2 Feb 2007
- Integers are the numbers ..., -3, -2, -1, 0, 1, 2, 3, ...
- Real numbers are all the numbers on the number line including fractions and decimals.
- Factors are divisors of a number.
- Prime numbers only have two factors (themselves and 1).
- Prime factors are the factors of a number which are prime.
Further reading
- Factoring numbers from Purplemath
Contents
- Introduction
- Integers and real numbers
- Positive and negative numbers
- Odd and even numbers
- Prime numbers
- Factoring numbers
- Divisibility tests
- Summary of properties of numbers
Practice questions
