Is 173 a prime number?
Yes, 173 is a prime number. Its only factors are 1 and 173.
Is 173 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 √173 ≈ 13.15. If none of them divides 173, it is prime.
- 3
None of them divides 173, so it is prime.
Testing 173 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 173 ÷ 2 | leaves 1 |
| 3 | 173 ÷ 3 | leaves 2 |
| 5 | 173 ÷ 5 | leaves 3 |
| 7 | 173 ÷ 7 | leaves 5 |
| 11 | 173 ÷ 11 | leaves 8 |
| 13 | 173 ÷ 13 | leaves 4 |
Questions
Is 173 a prime number?
Yes, 173 is a prime number. Its only factors are 1 and 173.
What is the next prime after 173?
179.
What is the prime number before 173?
167.
What are the factors of 173?
1, 173.