No, 424 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
424 has divisors other than 1 and itself. The smallest is 2: 424 ÷ 2 = 212.
Prime factorization: 424 = 2 × 2 × 2 × 53 = 2³ × 53.
| Number | Prime? |
|---|---|
| 420 | No, 2 × 2 × 3 × 5 × 7 |
| 421 | Yes |
| 422 | No, 2 × 211 |
| 423 | No, 3 × 3 × 47 |
| 425 | No, 5 × 5 × 17 |
| 426 | No, 2 × 3 × 71 |
| 427 | No, 7 × 61 |
| 428 | No, 2 × 2 × 107 |
Another number? Use the prime number checker for any value, or see the list of prime numbers.