Is 9925 a prime number?
No, 9925 is not a prime number. It is divisible by 5: 9925 = 5 × 1985.
Is 9925 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 √9925 ≈ 99.62. If none of them divides 9925, it is prime.
- 3
5 divides 9925 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 9925 = 5^{2} \times 397 \]Testing 9925 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 9925 ÷ 2 | leaves 1 |
| 3 | 9925 ÷ 3 | leaves 1 |
| 5 | 9925 ÷ 5 | divides exactly (1985) |
| 7 | 9925 ÷ 7 | leaves 6 |
| 11 | 9925 ÷ 11 | leaves 3 |
| 13 | 9925 ÷ 13 | leaves 6 |
| 17 | 9925 ÷ 17 | leaves 14 |
| 19 | 9925 ÷ 19 | leaves 7 |
| 23 | 9925 ÷ 23 | leaves 12 |
| 29 | 9925 ÷ 29 | leaves 7 |
| 31 | 9925 ÷ 31 | leaves 5 |
| 37 | 9925 ÷ 37 | leaves 9 |
Questions
Is 9925 a prime number?
No, 9925 is not a prime number. It is divisible by 5: 9925 = 5 × 1985.
What is the next prime after 9925?
9929.
What is the prime number before 9925?
9923.
What are the factors of 9925?
1, 5, 25, 397, 1985, 9925.