Is 54 a prime number?
No, 54 is not a prime number. It is divisible by 2: 54 = 2 × 27.
Is 54 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 √54 ≈ 7.35. If none of them divides 54, it is prime.
- 3
2 divides 54 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 54 = 2 \times 3^{3} \]Testing 54 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 54 ÷ 2 | divides exactly (27) |
| 3 | 54 ÷ 3 | divides exactly (18) |
| 5 | 54 ÷ 5 | leaves 4 |
| 7 | 54 ÷ 7 | leaves 5 |
Questions
Is 54 a prime number?
No, 54 is not a prime number. It is divisible by 2: 54 = 2 × 27.
What is the next prime after 54?
59.
What is the prime number before 54?
53.
What are the factors of 54?
1, 2, 3, 6, 9, 18, 27, 54.