Is 2979 a prime number?
No, 2979 is not a prime number. It is divisible by 3: 2979 = 3 × 993.
Is 2979 prime?
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A prime number has exactly two factors: 1 and itself.
- 2
It is enough to test the primes up to √2979 ≈ 54.58. If none of them divides 2979, it is prime.
- 3
3 divides 2979 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 2979 = 3^{2} \times 331 \]Testing 2979 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 2979 ÷ 2 | leaves 1 |
| 3 | 2979 ÷ 3 | divides exactly (993) |
| 5 | 2979 ÷ 5 | leaves 4 |
| 7 | 2979 ÷ 7 | leaves 4 |
| 11 | 2979 ÷ 11 | leaves 9 |
| 13 | 2979 ÷ 13 | leaves 2 |
| 17 | 2979 ÷ 17 | leaves 4 |
| 19 | 2979 ÷ 19 | leaves 15 |
| 23 | 2979 ÷ 23 | leaves 12 |
| 29 | 2979 ÷ 29 | leaves 21 |
| 31 | 2979 ÷ 31 | leaves 3 |
| 37 | 2979 ÷ 37 | leaves 19 |
Questions
Is 2979 a prime number?
No, 2979 is not a prime number. It is divisible by 3: 2979 = 3 × 993.
What is the next prime after 2979?
2999.
What is the prime number before 2979?
2971.
What are the factors of 2979?
1, 3, 9, 331, 993, 2979.