Is 3980 a prime number?
No, 3980 is not a prime number. It is divisible by 2: 3980 = 2 × 1990.
Is 3980 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 √3980 ≈ 63.09. If none of them divides 3980, it is prime.
- 3
2 divides 3980 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 3980 = 2^{2} \times 5 \times 199 \]Testing 3980 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 3980 ÷ 2 | divides exactly (1990) |
| 3 | 3980 ÷ 3 | leaves 2 |
| 5 | 3980 ÷ 5 | divides exactly (796) |
| 7 | 3980 ÷ 7 | leaves 4 |
| 11 | 3980 ÷ 11 | leaves 9 |
| 13 | 3980 ÷ 13 | leaves 2 |
| 17 | 3980 ÷ 17 | leaves 2 |
| 19 | 3980 ÷ 19 | leaves 9 |
| 23 | 3980 ÷ 23 | leaves 1 |
| 29 | 3980 ÷ 29 | leaves 7 |
| 31 | 3980 ÷ 31 | leaves 12 |
| 37 | 3980 ÷ 37 | leaves 21 |
Questions
Is 3980 a prime number?
No, 3980 is not a prime number. It is divisible by 2: 3980 = 2 × 1990.
What is the next prime after 3980?
3989.
What is the prime number before 3980?
3967.
What are the factors of 3980?
1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980.