Is 9980 a prime number?
No, 9980 is not a prime number. It is divisible by 2: 9980 = 2 × 4990.
Is 9980 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 √9980 ≈ 99.90. If none of them divides 9980, it is prime.
- 3
2 divides 9980 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 9980 = 2^{2} \times 5 \times 499 \]Testing 9980 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 9980 ÷ 2 | divides exactly (4990) |
| 3 | 9980 ÷ 3 | leaves 2 |
| 5 | 9980 ÷ 5 | divides exactly (1996) |
| 7 | 9980 ÷ 7 | leaves 5 |
| 11 | 9980 ÷ 11 | leaves 3 |
| 13 | 9980 ÷ 13 | leaves 9 |
| 17 | 9980 ÷ 17 | leaves 1 |
| 19 | 9980 ÷ 19 | leaves 5 |
| 23 | 9980 ÷ 23 | leaves 21 |
| 29 | 9980 ÷ 29 | leaves 4 |
| 31 | 9980 ÷ 31 | leaves 29 |
| 37 | 9980 ÷ 37 | leaves 27 |
Questions
Is 9980 a prime number?
No, 9980 is not a prime number. It is divisible by 2: 9980 = 2 × 4990.
What is the next prime after 9980?
10007.
What is the prime number before 9980?
9973.
What are the factors of 9980?
1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 9980.