Is 7423 a prime number?
No, 7423 is not a prime number. It is divisible by 13: 7423 = 13 × 571.
Is 7423 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 √7423 ≈ 86.16. If none of them divides 7423, it is prime.
- 3
13 divides 7423 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 7423 = 13 \times 571 \]
Testing 7423 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 7423 ÷ 2 | leaves 1 |
| 3 | 7423 ÷ 3 | leaves 1 |
| 5 | 7423 ÷ 5 | leaves 3 |
| 7 | 7423 ÷ 7 | leaves 3 |
| 11 | 7423 ÷ 11 | leaves 9 |
| 13 | 7423 ÷ 13 | divides exactly (571) |
| 17 | 7423 ÷ 17 | leaves 11 |
| 19 | 7423 ÷ 19 | leaves 13 |
| 23 | 7423 ÷ 23 | leaves 17 |
| 29 | 7423 ÷ 29 | leaves 28 |
| 31 | 7423 ÷ 31 | leaves 14 |
| 37 | 7423 ÷ 37 | leaves 23 |
Questions
Is 7423 a prime number?
No, 7423 is not a prime number. It is divisible by 13: 7423 = 13 × 571.
What is the next prime after 7423?
7433.
What is the prime number before 7423?
7417.
What are the factors of 7423?
1, 13, 571, 7423.