Is 724 a prime number?
No, 724 is not a prime number. It is divisible by 2: 724 = 2 × 362.
Is 724 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 √724 ≈ 26.91. If none of them divides 724, it is prime.
- 3
2 divides 724 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 724 = 2^{2} \times 181 \]Testing 724 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 724 ÷ 2 | divides exactly (362) |
| 3 | 724 ÷ 3 | leaves 1 |
| 5 | 724 ÷ 5 | leaves 4 |
| 7 | 724 ÷ 7 | leaves 3 |
| 11 | 724 ÷ 11 | leaves 9 |
| 13 | 724 ÷ 13 | leaves 9 |
| 17 | 724 ÷ 17 | leaves 10 |
| 19 | 724 ÷ 19 | leaves 2 |
| 23 | 724 ÷ 23 | leaves 11 |
Questions
Is 724 a prime number?
No, 724 is not a prime number. It is divisible by 2: 724 = 2 × 362.
What is the next prime after 724?
727.
What is the prime number before 724?
719.
What are the factors of 724?
1, 2, 4, 181, 362, 724.