No, 143 is not a prime number. It is a composite number: 143 = 11 × 13.
143 has divisors other than 1 and itself. The smallest is 11: 143 ÷ 11 = 13.
Prime factorization: 143 = 11 × 13.
| Number | Prime? |
|---|---|
| 139 | Yes |
| 140 | No, 2 × 2 × 5 × 7 |
| 141 | No, 3 × 47 |
| 142 | No, 2 × 71 |
| 144 | No, 2 × 2 × 2 × 2 × 3 × 3 |
| 145 | No, 5 × 29 |
| 146 | No, 2 × 73 |
| 147 | No, 3 × 7 × 7 |
More about 143: factors of 143 · 143 squared · square root of 143 · 143 in binary · 143 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.