Is 169 a prime number?
No, 169 is not a prime number. It is divisible by 13: 169 = 13 × 13.
Is 169 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 √169 ≈ 13.00. If none of them divides 169, it is prime.
- 3
13 divides 169 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 169 = 13^{2} \]Testing 169 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 169 ÷ 2 | leaves 1 |
| 3 | 169 ÷ 3 | leaves 1 |
| 5 | 169 ÷ 5 | leaves 4 |
| 7 | 169 ÷ 7 | leaves 1 |
| 11 | 169 ÷ 11 | leaves 4 |
| 13 | 169 ÷ 13 | divides exactly (13) |
Questions
Is 169 a prime number?
No, 169 is not a prime number. It is divisible by 13: 169 = 13 × 13.
What is the next prime after 169?
173.
What is the prime number before 169?
167.
What are the factors of 169?
1, 13, 169.