Is 135 a prime number?
No, 135 is not a prime number. It is divisible by 3: 135 = 3 × 45.
Is 135 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 √135 ≈ 11.62. If none of them divides 135, it is prime.
- 3
3 divides 135 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 135 = 3^{3} \times 5 \]Testing 135 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 135 ÷ 2 | leaves 1 |
| 3 | 135 ÷ 3 | divides exactly (45) |
| 5 | 135 ÷ 5 | divides exactly (27) |
| 7 | 135 ÷ 7 | leaves 2 |
| 11 | 135 ÷ 11 | leaves 3 |
Questions
Is 135 a prime number?
No, 135 is not a prime number. It is divisible by 3: 135 = 3 × 45.
What is the next prime after 135?
137.
What is the prime number before 135?
131.
What are the factors of 135?
1, 3, 5, 9, 15, 27, 45, 135.