No, 220 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
220 has divisors other than 1 and itself. The smallest is 2: 220 ÷ 2 = 110.
Prime factorization: 220 = 2 × 2 × 5 × 11 = 2² × 5 × 11.
| Number | Prime? |
|---|---|
| 216 | No, 2 × 2 × 2 × 3 × 3 × 3 |
| 217 | No, 7 × 31 |
| 218 | No, 2 × 109 |
| 219 | No, 3 × 73 |
| 221 | No, 13 × 17 |
| 222 | No, 2 × 3 × 37 |
| 223 | Yes |
| 224 | No, 2 × 2 × 2 × 2 × 2 × 7 |
More about 220: 220 in binary.
Another number? Use the prime number checker for any value, or see the list of prime numbers.