No, 10 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
10 has divisors other than 1 and itself. The smallest is 2: 10 ÷ 2 = 5.
Prime factorization: 10 = 2 × 5.
| Number | Prime? |
|---|---|
| 6 | No, 2 × 3 |
| 7 | Yes |
| 8 | No, 2 × 2 × 2 |
| 9 | No, 3 × 3 |
| 11 | Yes |
| 12 | No, 2 × 2 × 3 |
| 13 | Yes |
| 14 | No, 2 × 7 |
More about 10: factors of 10 · 10 squared · square root of 10 · 10 in binary · 10 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.