Is 69 a prime number?
No, 69 is not a prime number. It is divisible by 3: 69 = 3 × 23.
Is 69 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 √69 ≈ 8.31. If none of them divides 69, it is prime.
- 3
3 divides 69 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 69 = 3 \times 23 \]
Testing 69 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 69 ÷ 2 | leaves 1 |
| 3 | 69 ÷ 3 | divides exactly (23) |
| 5 | 69 ÷ 5 | leaves 4 |
| 7 | 69 ÷ 7 | leaves 6 |
Questions
Is 69 a prime number?
No, 69 is not a prime number. It is divisible by 3: 69 = 3 × 23.
What is the next prime after 69?
71.
What is the prime number before 69?
67.
What are the factors of 69?
1, 3, 23, 69.