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Number | Factors | Prime? |
---|---|---|
5 | 1 and 5 | ✓ |
6 | 1, 2, 3, and 6 | × |
7 | 1 and 7 | ✓ |
The set of prime numbers contains infinitely many numbers. These are some important properties of prime and composite numbers.
Prime | Composite |
---|---|
A prime number has only two factors. | A composite number has more than two factors. |
The only even prime number is 2. | Every even number greater than 2 is composite. |
Any whole number greater than 1 is either prime or composite. | |
1 is neither prime nor composite. |