Is 2987 a prime number?
No, 2987 is not a prime number. It is divisible by 29: 2987 = 29 × 103.
Is 2987 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 √2987 ≈ 54.65. If none of them divides 2987, it is prime.
- 3
29 divides 2987 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 2987 = 29 \times 103 \]
Testing 2987 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 2987 ÷ 2 | leaves 1 |
| 3 | 2987 ÷ 3 | leaves 2 |
| 5 | 2987 ÷ 5 | leaves 2 |
| 7 | 2987 ÷ 7 | leaves 5 |
| 11 | 2987 ÷ 11 | leaves 6 |
| 13 | 2987 ÷ 13 | leaves 10 |
| 17 | 2987 ÷ 17 | leaves 12 |
| 19 | 2987 ÷ 19 | leaves 4 |
| 23 | 2987 ÷ 23 | leaves 20 |
| 29 | 2987 ÷ 29 | divides exactly (103) |
| 31 | 2987 ÷ 31 | leaves 11 |
| 37 | 2987 ÷ 37 | leaves 27 |
Questions
Is 2987 a prime number?
No, 2987 is not a prime number. It is divisible by 29: 2987 = 29 × 103.
What is the next prime after 2987?
2999.
What is the prime number before 2987?
2971.
What are the factors of 2987?
1, 29, 103, 2987.