Is 39 a prime number?
No, 39 is not a prime number. It is divisible by 3: 39 = 3 × 13.
Is 39 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 √39 ≈ 6.24. If none of them divides 39, it is prime.
- 3
3 divides 39 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 39 = 3 \times 13 \]
Testing 39 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 39 ÷ 2 | leaves 1 |
| 3 | 39 ÷ 3 | divides exactly (13) |
| 5 | 39 ÷ 5 | leaves 4 |
Questions
Is 39 a prime number?
No, 39 is not a prime number. It is divisible by 3: 39 = 3 × 13.
What is the next prime after 39?
41.
What is the prime number before 39?
37.
What are the factors of 39?
1, 3, 13, 39.