Is 492 a prime number?
No, 492 is not a prime number. It is divisible by 2: 492 = 2 × 246.
Is 492 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 √492 ≈ 22.18. If none of them divides 492, it is prime.
- 3
2 divides 492 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 492 = 2^{2} \times 3 \times 41 \]Testing 492 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 492 ÷ 2 | divides exactly (246) |
| 3 | 492 ÷ 3 | divides exactly (164) |
| 5 | 492 ÷ 5 | leaves 2 |
| 7 | 492 ÷ 7 | leaves 2 |
| 11 | 492 ÷ 11 | leaves 8 |
| 13 | 492 ÷ 13 | leaves 11 |
| 17 | 492 ÷ 17 | leaves 16 |
| 19 | 492 ÷ 19 | leaves 17 |
Questions
Is 492 a prime number?
No, 492 is not a prime number. It is divisible by 2: 492 = 2 × 246.
What is the next prime after 492?
499.
What is the prime number before 492?
491.
What are the factors of 492?
1, 2, 3, 4, 6, 12, 41, 82, 123, 164, 246, 492.