No, 511 is not a prime number. It is a composite number: 511 = 7 × 73.
511 has divisors other than 1 and itself. The smallest is 7: 511 ÷ 7 = 73.
Prime factorization: 511 = 7 × 73.
| Number | Prime? |
|---|---|
| 498 | No, 2 × 3 × 83 |
| 499 | Yes |
| 500 | No, 2 × 2 × 5 × 5 × 5 |
| 501 | No, 3 × 167 |
| 521 | Yes |
| 539 | No, 7 × 7 × 11 |
| 541 | Yes |
| 561 | No, 3 × 11 × 17 |
Another number? Use the prime number checker for any value, or see the list of prime numbers.