Is 147 a prime number?
No, 147 is not a prime number. It is divisible by 3: 147 = 3 × 49.
Is 147 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 √147 ≈ 12.12. If none of them divides 147, it is prime.
- 3
3 divides 147 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 147 = 3 \times 7^{2} \]Testing 147 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 147 ÷ 2 | leaves 1 |
| 3 | 147 ÷ 3 | divides exactly (49) |
| 5 | 147 ÷ 5 | leaves 2 |
| 7 | 147 ÷ 7 | divides exactly (21) |
| 11 | 147 ÷ 11 | leaves 4 |
Questions
Is 147 a prime number?
No, 147 is not a prime number. It is divisible by 3: 147 = 3 × 49.
What is the next prime after 147?
149.
What is the prime number before 147?
139.
What are the factors of 147?
1, 3, 7, 21, 49, 147.