No, 169 is not a prime number. It is a composite number: 169 = 13 × 13.
169 has divisors other than 1 and itself. The smallest is 13: 169 ÷ 13 = 13.
Prime factorization: 169 = 13 × 13 = 13².
| Number | Prime? |
|---|---|
| 165 | No, 3 × 5 × 11 |
| 166 | No, 2 × 83 |
| 167 | Yes |
| 168 | No, 2 × 2 × 2 × 3 × 7 |
| 170 | No, 2 × 5 × 17 |
| 171 | No, 3 × 3 × 19 |
| 172 | No, 2 × 2 × 43 |
| 173 | Yes |
More about 169: factors of 169 · square root of 169 · 169 in binary.
Another number? Use the prime number checker for any value, or see the list of prime numbers.