No, 48 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
48 has divisors other than 1 and itself. The smallest is 2: 48 ÷ 2 = 24.
Prime factorization: 48 = 2 × 2 × 2 × 2 × 3 = 2⁴ × 3.
| Number | Prime? |
|---|---|
| 44 | No, 2 × 2 × 11 |
| 45 | No, 3 × 3 × 5 |
| 46 | No, 2 × 23 |
| 47 | Yes |
| 49 | No, 7 × 7 |
| 50 | No, 2 × 5 × 5 |
| 51 | No, 3 × 17 |
| 52 | No, 2 × 2 × 13 |
More about 48: factors of 48 · 48 squared · square root of 48 · 48 in binary · 48 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.