Is 124 a prime number?
No, 124 is not a prime number. It is divisible by 2: 124 = 2 × 62.
Is 124 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 √124 ≈ 11.14. If none of them divides 124, it is prime.
- 3
2 divides 124 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 124 = 2^{2} \times 31 \]Testing 124 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 124 ÷ 2 | divides exactly (62) |
| 3 | 124 ÷ 3 | leaves 1 |
| 5 | 124 ÷ 5 | leaves 4 |
| 7 | 124 ÷ 7 | leaves 5 |
| 11 | 124 ÷ 11 | leaves 3 |
Questions
Is 124 a prime number?
No, 124 is not a prime number. It is divisible by 2: 124 = 2 × 62.
What is the next prime after 124?
127.
What is the prime number before 124?
113.
What are the factors of 124?
1, 2, 4, 31, 62, 124.