Yes, 2,999 is a prime number. Its only factors are 1 and 2,999.
A number is prime if no smaller prime up to its square root divides it. The square root of 2,999 is about 54.76, so it is enough to test the primes 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47 and 53.
| Divide by | Remainder | Divides evenly? |
|---|---|---|
| 2 | 1 | No |
| 3 | 2 | No |
| 5 | 4 | No |
| 7 | 3 | No |
| 11 | 7 | No |
| 13 | 9 | No |
| 17 | 7 | No |
| 19 | 16 | No |
| 23 | 9 | No |
| 29 | 12 | No |
| 31 | 23 | No |
| 37 | 2 | No |
| 41 | 6 | No |
| 43 | 32 | No |
| 47 | 38 | No |
| 53 | 31 | No |
None of them divides 2,999 evenly, so 2,999 is prime.
| Number | Prime? |
|---|---|
| 2,024 | No, 2 × 2 × 2 × 11 × 23 |
| 2,025 | No, 3 × 3 × 3 × 3 × 5 × 5 |
| 2,027 | Yes |
| 2,029 | Yes |
| 3,001 | Yes |
| 4,001 | Yes |
| 5,003 | Yes |
| 7,919 | Yes |
Another number? Use the prime number checker for any value, or see the list of prime numbers.