No, 273 is not a prime number. It is a composite number: its digits add up to 12, which is divisible by 3, so 273 is divisible by 3.
273 has divisors other than 1 and itself. The smallest is 3: 273 ÷ 3 = 91.
Prime factorization: 273 = 3 × 7 × 13.
| Number | Prime? |
|---|---|
| 269 | Yes |
| 270 | No, 2 × 3 × 3 × 3 × 5 |
| 271 | Yes |
| 272 | No, 2 × 2 × 2 × 2 × 17 |
| 274 | No, 2 × 137 |
| 275 | No, 5 × 5 × 11 |
| 276 | No, 2 × 2 × 3 × 23 |
| 277 | Yes |
Another number? Use the prime number checker for any value, or see the list of prime numbers.