No, 369 is not a prime number. It is a composite number: its digits add up to 18, which is divisible by 3, so 369 is divisible by 3.
369 has divisors other than 1 and itself. The smallest is 3: 369 ÷ 3 = 123.
Prime factorization: 369 = 3 × 3 × 41 = 3² × 41.
| Number | Prime? |
|---|---|
| 365 | No, 5 × 73 |
| 366 | No, 2 × 3 × 61 |
| 367 | Yes |
| 368 | No, 2 × 2 × 2 × 2 × 23 |
| 370 | No, 2 × 5 × 37 |
| 371 | No, 7 × 53 |
| 372 | No, 2 × 2 × 3 × 31 |
| 373 | Yes |
Another number? Use the prime number checker for any value, or see the list of prime numbers.