Is 141 a prime number?
No, 141 is not a prime number. It is divisible by 3: 141 = 3 × 47.
Is 141 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 √141 ≈ 11.87. If none of them divides 141, it is prime.
- 3
3 divides 141 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 141 = 3 \times 47 \]
Testing 141 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 141 ÷ 2 | leaves 1 |
| 3 | 141 ÷ 3 | divides exactly (47) |
| 5 | 141 ÷ 5 | leaves 1 |
| 7 | 141 ÷ 7 | leaves 1 |
| 11 | 141 ÷ 11 | leaves 9 |
Questions
Is 141 a prime number?
No, 141 is not a prime number. It is divisible by 3: 141 = 3 × 47.
What is the next prime after 141?
149.
What is the prime number before 141?
139.
What are the factors of 141?
1, 3, 47, 141.