Is 3988 a prime number?
No, 3988 is not a prime number. It is divisible by 2: 3988 = 2 × 1994.
Is 3988 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 √3988 ≈ 63.15. If none of them divides 3988, it is prime.
- 3
2 divides 3988 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 3988 = 2^{2} \times 997 \]Testing 3988 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 3988 ÷ 2 | divides exactly (1994) |
| 3 | 3988 ÷ 3 | leaves 1 |
| 5 | 3988 ÷ 5 | leaves 3 |
| 7 | 3988 ÷ 7 | leaves 5 |
| 11 | 3988 ÷ 11 | leaves 6 |
| 13 | 3988 ÷ 13 | leaves 10 |
| 17 | 3988 ÷ 17 | leaves 10 |
| 19 | 3988 ÷ 19 | leaves 17 |
| 23 | 3988 ÷ 23 | leaves 9 |
| 29 | 3988 ÷ 29 | leaves 15 |
| 31 | 3988 ÷ 31 | leaves 20 |
| 37 | 3988 ÷ 37 | leaves 29 |
Questions
Is 3988 a prime number?
No, 3988 is not a prime number. It is divisible by 2: 3988 = 2 × 1994.
What is the next prime after 3988?
3989.
What is the prime number before 3988?
3967.
What are the factors of 3988?
1, 2, 4, 997, 1994, 3988.