No, 187 is not a prime number. It is a composite number: 187 = 11 × 17.
187 has divisors other than 1 and itself. The smallest is 11: 187 ÷ 11 = 17.
Prime factorization: 187 = 11 × 17.
| Number | Prime? |
|---|---|
| 183 | No, 3 × 61 |
| 184 | No, 2 × 2 × 2 × 23 |
| 185 | No, 5 × 37 |
| 186 | No, 2 × 3 × 31 |
| 188 | No, 2 × 2 × 47 |
| 189 | No, 3 × 3 × 3 × 7 |
| 190 | No, 2 × 5 × 19 |
| 191 | Yes |
More about 187: factors of 187 · square root of 187 · 187 in binary.
Another number? Use the prime number checker for any value, or see the list of prime numbers.