Is 1807 a prime number?
No, 1807 is not a prime number. It is divisible by 13: 1807 = 13 × 139.
Is 1807 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 √1807 ≈ 42.51. If none of them divides 1807, it is prime.
- 3
13 divides 1807 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 1807 = 13 \times 139 \]
Testing 1807 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 1807 ÷ 2 | leaves 1 |
| 3 | 1807 ÷ 3 | leaves 1 |
| 5 | 1807 ÷ 5 | leaves 2 |
| 7 | 1807 ÷ 7 | leaves 1 |
| 11 | 1807 ÷ 11 | leaves 3 |
| 13 | 1807 ÷ 13 | divides exactly (139) |
| 17 | 1807 ÷ 17 | leaves 5 |
| 19 | 1807 ÷ 19 | leaves 2 |
| 23 | 1807 ÷ 23 | leaves 13 |
| 29 | 1807 ÷ 29 | leaves 9 |
| 31 | 1807 ÷ 31 | leaves 9 |
| 37 | 1807 ÷ 37 | leaves 31 |
Questions
Is 1807 a prime number?
No, 1807 is not a prime number. It is divisible by 13: 1807 = 13 × 139.
What is the next prime after 1807?
1811.
What is the prime number before 1807?
1801.
What are the factors of 1807?
1, 13, 139, 1807.