No, 217 is not a prime number. It is a composite number: 217 = 7 × 31.
217 has divisors other than 1 and itself. The smallest is 7: 217 ÷ 7 = 31.
Prime factorization: 217 = 7 × 31.
| Number | Prime? |
|---|---|
| 213 | No, 3 × 71 |
| 214 | No, 2 × 107 |
| 215 | No, 5 × 43 |
| 216 | No, 2 × 2 × 2 × 3 × 3 × 3 |
| 218 | No, 2 × 109 |
| 219 | No, 3 × 73 |
| 220 | No, 2 × 2 × 5 × 11 |
| 221 | No, 13 × 17 |
More about 217: 217 in binary.
Another number? Use the prime number checker for any value, or see the list of prime numbers.