Is 672 a prime number?
No, 672 is not a prime number. It is divisible by 2: 672 = 2 × 336.
Is 672 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 √672 ≈ 25.92. If none of them divides 672, it is prime.
- 3
2 divides 672 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 672 = 2^{5} \times 3 \times 7 \]Testing 672 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 672 ÷ 2 | divides exactly (336) |
| 3 | 672 ÷ 3 | divides exactly (224) |
| 5 | 672 ÷ 5 | leaves 2 |
| 7 | 672 ÷ 7 | divides exactly (96) |
| 11 | 672 ÷ 11 | leaves 1 |
| 13 | 672 ÷ 13 | leaves 9 |
| 17 | 672 ÷ 17 | leaves 9 |
| 19 | 672 ÷ 19 | leaves 7 |
| 23 | 672 ÷ 23 | leaves 5 |
Questions
Is 672 a prime number?
No, 672 is not a prime number. It is divisible by 2: 672 = 2 × 336.
What is the next prime after 672?
673.
What is the prime number before 672?
661.
What are the factors of 672?
1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672.