Is 1425 a prime number?
No, 1425 is not a prime number. It is divisible by 3: 1425 = 3 × 475.
Is 1425 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 √1425 ≈ 37.75. If none of them divides 1425, it is prime.
- 3
3 divides 1425 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 1425 = 3 \times 5^{2} \times 19 \]Testing 1425 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 1425 ÷ 2 | leaves 1 |
| 3 | 1425 ÷ 3 | divides exactly (475) |
| 5 | 1425 ÷ 5 | divides exactly (285) |
| 7 | 1425 ÷ 7 | leaves 4 |
| 11 | 1425 ÷ 11 | leaves 6 |
| 13 | 1425 ÷ 13 | leaves 8 |
| 17 | 1425 ÷ 17 | leaves 14 |
| 19 | 1425 ÷ 19 | divides exactly (75) |
| 23 | 1425 ÷ 23 | leaves 22 |
| 29 | 1425 ÷ 29 | leaves 4 |
| 31 | 1425 ÷ 31 | leaves 30 |
| 37 | 1425 ÷ 37 | leaves 19 |
Questions
Is 1425 a prime number?
No, 1425 is not a prime number. It is divisible by 3: 1425 = 3 × 475.
What is the next prime after 1425?
1427.
What is the prime number before 1425?
1423.
What are the factors of 1425?
1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425.