No, 228 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
228 has divisors other than 1 and itself. The smallest is 2: 228 ÷ 2 = 114.
Prime factorization: 228 = 2 × 2 × 3 × 19 = 2² × 3 × 19.
| Number | Prime? |
|---|---|
| 224 | No, 2 × 2 × 2 × 2 × 2 × 7 |
| 225 | No, 3 × 3 × 5 × 5 |
| 226 | No, 2 × 113 |
| 227 | Yes |
| 229 | Yes |
| 230 | No, 2 × 5 × 23 |
| 231 | No, 3 × 7 × 11 |
| 232 | No, 2 × 2 × 2 × 29 |
More about 228: 228 in binary.
Another number? Use the prime number checker for any value, or see the list of prime numbers.