Is 1679 a prime number?
No, 1679 is not a prime number. It is divisible by 23: 1679 = 23 × 73.
Is 1679 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 √1679 ≈ 40.98. If none of them divides 1679, it is prime.
- 3
23 divides 1679 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 1679 = 23 \times 73 \]
Testing 1679 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 1679 ÷ 2 | leaves 1 |
| 3 | 1679 ÷ 3 | leaves 2 |
| 5 | 1679 ÷ 5 | leaves 4 |
| 7 | 1679 ÷ 7 | leaves 6 |
| 11 | 1679 ÷ 11 | leaves 7 |
| 13 | 1679 ÷ 13 | leaves 2 |
| 17 | 1679 ÷ 17 | leaves 13 |
| 19 | 1679 ÷ 19 | leaves 7 |
| 23 | 1679 ÷ 23 | divides exactly (73) |
| 29 | 1679 ÷ 29 | leaves 26 |
| 31 | 1679 ÷ 31 | leaves 5 |
| 37 | 1679 ÷ 37 | leaves 14 |
Questions
Is 1679 a prime number?
No, 1679 is not a prime number. It is divisible by 23: 1679 = 23 × 73.
What is the next prime after 1679?
1693.
What is the prime number before 1679?
1669.
What are the factors of 1679?
1, 23, 73, 1679.