No, 133 is not a prime number. It is a composite number: 133 = 7 × 19.
133 has divisors other than 1 and itself. The smallest is 7: 133 ÷ 7 = 19.
Prime factorization: 133 = 7 × 19.
| Number | Prime? |
|---|---|
| 129 | No, 3 × 43 |
| 130 | No, 2 × 5 × 13 |
| 131 | Yes |
| 132 | No, 2 × 2 × 3 × 11 |
| 134 | No, 2 × 67 |
| 135 | No, 3 × 3 × 3 × 5 |
| 136 | No, 2 × 2 × 2 × 17 |
| 137 | Yes |
More about 133: factors of 133 · 133 squared · square root of 133 · 133 in binary · 133 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.