No, 26 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
26 has divisors other than 1 and itself. The smallest is 2: 26 ÷ 2 = 13.
Prime factorization: 26 = 2 × 13.
| Number | Prime? |
|---|---|
| 22 | No, 2 × 11 |
| 23 | Yes |
| 24 | No, 2 × 2 × 2 × 3 |
| 25 | No, 5 × 5 |
| 27 | No, 3 × 3 × 3 |
| 28 | No, 2 × 2 × 7 |
| 29 | Yes |
| 30 | No, 2 × 3 × 5 |
More about 26: factors of 26 · 26 squared · square root of 26 · 26 in binary · 26 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.