No, 447 is not a prime number. It is a composite number: its digits add up to 15, which is divisible by 3, so 447 is divisible by 3.
447 has divisors other than 1 and itself. The smallest is 3: 447 ÷ 3 = 149.
Prime factorization: 447 = 3 × 149.
| Number | Prime? |
|---|---|
| 443 | Yes |
| 444 | No, 2 × 2 × 3 × 37 |
| 445 | No, 5 × 89 |
| 446 | No, 2 × 223 |
| 448 | No, 2 × 2 × 2 × 2 × 2 × 2 × 7 |
| 449 | Yes |
| 450 | No, 2 × 3 × 3 × 5 × 5 |
| 451 | No, 11 × 41 |
Another number? Use the prime number checker for any value, or see the list of prime numbers.