No, 135 is not a prime number. It is a composite number: it ends in 5, so it is divisible by 5.
135 has divisors other than 1 and itself. The smallest is 3: 135 ÷ 3 = 45.
Prime factorization: 135 = 3 × 3 × 3 × 5 = 3³ × 5.
| Number | Prime? |
|---|---|
| 131 | Yes |
| 132 | No, 2 × 2 × 3 × 11 |
| 133 | No, 7 × 19 |
| 134 | No, 2 × 67 |
| 136 | No, 2 × 2 × 2 × 17 |
| 137 | Yes |
| 138 | No, 2 × 3 × 23 |
| 139 | Yes |
More about 135: factors of 135 · 135 squared · square root of 135 · 135 in binary · 135 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.