No, 338 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
338 has divisors other than 1 and itself. The smallest is 2: 338 ÷ 2 = 169.
Prime factorization: 338 = 2 × 13 × 13 = 2 × 13².
| Number | Prime? |
|---|---|
| 334 | No, 2 × 167 |
| 335 | No, 5 × 67 |
| 336 | No, 2 × 2 × 2 × 2 × 3 × 7 |
| 337 | Yes |
| 339 | No, 3 × 113 |
| 340 | No, 2 × 2 × 5 × 17 |
| 341 | No, 11 × 31 |
| 342 | No, 2 × 3 × 3 × 19 |
Another number? Use the prime number checker for any value, or see the list of prime numbers.