No, 124 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
124 has divisors other than 1 and itself. The smallest is 2: 124 ÷ 2 = 62.
Prime factorization: 124 = 2 × 2 × 31 = 2² × 31.
| Number | Prime? |
|---|---|
| 120 | No, 2 × 2 × 2 × 3 × 5 |
| 121 | No, 11 × 11 |
| 122 | No, 2 × 61 |
| 123 | No, 3 × 41 |
| 125 | No, 5 × 5 × 5 |
| 126 | No, 2 × 3 × 3 × 7 |
| 127 | Yes |
| 128 | No, 2 × 2 × 2 × 2 × 2 × 2 × 2 |
More about 124: factors of 124 · 124 squared · square root of 124 · 124 in binary · 124 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.