Is 9940 a prime number?
No, 9940 is not a prime number. It is divisible by 2: 9940 = 2 × 4970.
Is 9940 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 √9940 ≈ 99.70. If none of them divides 9940, it is prime.
- 3
2 divides 9940 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 9940 = 2^{2} \times 5 \times 7 \times 71 \]Testing 9940 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 9940 ÷ 2 | divides exactly (4970) |
| 3 | 9940 ÷ 3 | leaves 1 |
| 5 | 9940 ÷ 5 | divides exactly (1988) |
| 7 | 9940 ÷ 7 | divides exactly (1420) |
| 11 | 9940 ÷ 11 | leaves 7 |
| 13 | 9940 ÷ 13 | leaves 8 |
| 17 | 9940 ÷ 17 | leaves 12 |
| 19 | 9940 ÷ 19 | leaves 3 |
| 23 | 9940 ÷ 23 | leaves 4 |
| 29 | 9940 ÷ 29 | leaves 22 |
| 31 | 9940 ÷ 31 | leaves 20 |
| 37 | 9940 ÷ 37 | leaves 24 |
Questions
Is 9940 a prime number?
No, 9940 is not a prime number. It is divisible by 2: 9940 = 2 × 4970.
What is the next prime after 9940?
9941.
What is the prime number before 9940?
9931.
What are the factors of 9940?
1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940.