No, 328 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
328 has divisors other than 1 and itself. The smallest is 2: 328 ÷ 2 = 164.
Prime factorization: 328 = 2 × 2 × 2 × 41 = 2³ × 41.
| Number | Prime? |
|---|---|
| 324 | No, 2 × 2 × 3 × 3 × 3 × 3 |
| 325 | No, 5 × 5 × 13 |
| 326 | No, 2 × 163 |
| 327 | No, 3 × 109 |
| 329 | No, 7 × 47 |
| 330 | No, 2 × 3 × 5 × 11 |
| 331 | Yes |
| 332 | No, 2 × 2 × 83 |
Another number? Use the prime number checker for any value, or see the list of prime numbers.