Is 235 a prime number?
No, 235 is not a prime number. It is divisible by 5: 235 = 5 × 47.
Is 235 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 √235 ≈ 15.33. If none of them divides 235, it is prime.
- 3
5 divides 235 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 235 = 5 \times 47 \]
Testing 235 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 235 ÷ 2 | leaves 1 |
| 3 | 235 ÷ 3 | leaves 1 |
| 5 | 235 ÷ 5 | divides exactly (47) |
| 7 | 235 ÷ 7 | leaves 4 |
| 11 | 235 ÷ 11 | leaves 4 |
| 13 | 235 ÷ 13 | leaves 1 |
Questions
Is 235 a prime number?
No, 235 is not a prime number. It is divisible by 5: 235 = 5 × 47.
What is the next prime after 235?
239.
What is the prime number before 235?
233.
What are the factors of 235?
1, 5, 47, 235.