No, 70 is not a prime number. It is a composite number: it is even, so it is divisible by 2.
70 has divisors other than 1 and itself. The smallest is 2: 70 ÷ 2 = 35.
Prime factorization: 70 = 2 × 5 × 7.
| Number | Prime? |
|---|---|
| 66 | No, 2 × 3 × 11 |
| 67 | Yes |
| 68 | No, 2 × 2 × 17 |
| 69 | No, 3 × 23 |
| 71 | Yes |
| 72 | No, 2 × 2 × 2 × 3 × 3 |
| 73 | Yes |
| 74 | No, 2 × 37 |
More about 70: factors of 70 · 70 squared · square root of 70 · 70 in binary · 70 in Roman numerals.
Another number? Use the prime number checker for any value, or see the list of prime numbers.