No, 24 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
24 has divisors other than 1 and itself. The smallest is 2: 24 ÷ 2 = 12.
Prime factorization: 24 = 2 × 2 × 2 × 3 = 2³ × 3.
| Number | Prime? |
|---|---|
| 20 | No, 2 × 2 × 5 |
| 21 | No, 3 × 7 |
| 22 | No, 2 × 11 |
| 23 | Yes |
| 25 | No, 5 × 5 |
| 26 | No, 2 × 13 |
| 27 | No, 3 × 3 × 3 |
| 28 | No, 2 × 2 × 7 |
More about 24: factors of 24 · 24 squared · square root of 24 · 24 in binary · 24 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.