Is 17 a prime number?
Yes, 17 is a prime number. Its only factors are 1 and 17.
Is 17 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 √17 ≈ 4.12. If none of them divides 17, it is prime.
- 3
None of them divides 17, so it is prime.
Testing 17 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 17 ÷ 2 | leaves 1 |
| 3 | 17 ÷ 3 | leaves 2 |
Questions
Is 17 a prime number?
Yes, 17 is a prime number. Its only factors are 1 and 17.
What is the next prime after 17?
19.
What is the prime number before 17?
13.
What are the factors of 17?
1, 17.