No, 180 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
180 has divisors other than 1 and itself. The smallest is 2: 180 ÷ 2 = 90.
Prime factorization: 180 = 2 × 2 × 3 × 3 × 5 = 2² × 3² × 5.
| Number | Prime? |
|---|---|
| 176 | No, 2 × 2 × 2 × 2 × 11 |
| 177 | No, 3 × 59 |
| 178 | No, 2 × 89 |
| 179 | Yes |
| 181 | Yes |
| 182 | No, 2 × 7 × 13 |
| 183 | No, 3 × 61 |
| 184 | No, 2 × 2 × 2 × 23 |
More about 180: factors of 180 · square root of 180 · 180 in binary.
Another number? Use the prime number checker for any value, or see the list of prime numbers.