No, 501 is not a prime number. It is a composite number: its digits add up to 6, which is divisible by 3, so 501 is divisible by 3.
501 has divisors other than 1 and itself. The smallest is 3: 501 ÷ 3 = 167.
Prime factorization: 501 = 3 × 167.
| Number | Prime? |
|---|---|
| 497 | No, 7 × 71 |
| 498 | No, 2 × 3 × 83 |
| 499 | Yes |
| 500 | No, 2 × 2 × 5 × 5 × 5 |
| 511 | No, 7 × 73 |
| 521 | Yes |
| 539 | No, 7 × 7 × 11 |
| 541 | Yes |
Another number? Use the prime number checker for any value, or see the list of prime numbers.