Is 9989 a prime number?
No, 9989 is not a prime number. It is divisible by 7: 9989 = 7 × 1427.
Is 9989 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 √9989 ≈ 99.94. If none of them divides 9989, it is prime.
- 3
7 divides 9989 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 9989 = 7 \times 1427 \]
Testing 9989 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 9989 ÷ 2 | leaves 1 |
| 3 | 9989 ÷ 3 | leaves 2 |
| 5 | 9989 ÷ 5 | leaves 4 |
| 7 | 9989 ÷ 7 | divides exactly (1427) |
| 11 | 9989 ÷ 11 | leaves 1 |
| 13 | 9989 ÷ 13 | leaves 5 |
| 17 | 9989 ÷ 17 | leaves 10 |
| 19 | 9989 ÷ 19 | leaves 14 |
| 23 | 9989 ÷ 23 | leaves 7 |
| 29 | 9989 ÷ 29 | leaves 13 |
| 31 | 9989 ÷ 31 | leaves 7 |
| 37 | 9989 ÷ 37 | leaves 36 |
Questions
Is 9989 a prime number?
No, 9989 is not a prime number. It is divisible by 7: 9989 = 7 × 1427.
What is the next prime after 9989?
10007.
What is the prime number before 9989?
9973.
What are the factors of 9989?
1, 7, 1427, 9989.