No, 427 is not a prime number. It is a composite number: 427 = 7 × 61.
427 has divisors other than 1 and itself. The smallest is 7: 427 ÷ 7 = 61.
Prime factorization: 427 = 7 × 61.
| Number | Prime? |
|---|---|
| 423 | No, 3 × 3 × 47 |
| 424 | No, 2 × 2 × 2 × 53 |
| 425 | No, 5 × 5 × 17 |
| 426 | No, 2 × 3 × 71 |
| 428 | No, 2 × 2 × 107 |
| 429 | No, 3 × 11 × 13 |
| 430 | No, 2 × 5 × 43 |
| 431 | Yes |
Another number? Use the prime number checker for any value, or see the list of prime numbers.