No, 355 is not a prime number. It is a composite number: it ends in 5, so it is divisible by 5.
355 has divisors other than 1 and itself. The smallest is 5: 355 ÷ 5 = 71.
Prime factorization: 355 = 5 × 71.
| Number | Prime? |
|---|---|
| 351 | No, 3 × 3 × 3 × 13 |
| 352 | No, 2 × 2 × 2 × 2 × 2 × 11 |
| 353 | Yes |
| 354 | No, 2 × 3 × 59 |
| 356 | No, 2 × 2 × 89 |
| 357 | No, 3 × 7 × 17 |
| 358 | No, 2 × 179 |
| 359 | Yes |
Another number? Use the prime number checker for any value, or see the list of prime numbers.