Is 1009 a prime number?
Yes, 1009 is a prime number. Its only factors are 1 and 1009.
Is 1009 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 √1009 ≈ 31.76. If none of them divides 1009, it is prime.
- 3
None of them divides 1009, so it is prime.
Testing 1009 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 1009 ÷ 2 | leaves 1 |
| 3 | 1009 ÷ 3 | leaves 1 |
| 5 | 1009 ÷ 5 | leaves 4 |
| 7 | 1009 ÷ 7 | leaves 1 |
| 11 | 1009 ÷ 11 | leaves 8 |
| 13 | 1009 ÷ 13 | leaves 8 |
| 17 | 1009 ÷ 17 | leaves 6 |
| 19 | 1009 ÷ 19 | leaves 2 |
| 23 | 1009 ÷ 23 | leaves 20 |
| 29 | 1009 ÷ 29 | leaves 23 |
| 31 | 1009 ÷ 31 | leaves 17 |
Questions
Is 1009 a prime number?
Yes, 1009 is a prime number. Its only factors are 1 and 1009.
What is the next prime after 1009?
1013.
What is the prime number before 1009?
997.
What are the factors of 1009?
1, 1009.