Key learning points

1. A prime number has only 2 factors, 1 and itself.
2. A composite number is a number with more than 2 factors.

Keywords

• Factor - A factor is a whole number which exactly divides another whole number.

• Prime number - A prime number is a whole number greater than one which has exactly two factors.

• Composite number - A composite number is a whole number which has more than two factors.

• Square number - A square number is the result of multiplying an integer (not a fraction) by itself.

Common misconception