Is 120 a prime number?
No, 120 is not a prime number. It is divisible by 2: 120 = 2 × 60.
Is 120 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 √120 ≈ 10.95. If none of them divides 120, it is prime.
- 3
2 divides 120 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 120 = 2^{3} \times 3 \times 5 \]Testing 120 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 120 ÷ 2 | divides exactly (60) |
| 3 | 120 ÷ 3 | divides exactly (40) |
| 5 | 120 ÷ 5 | divides exactly (24) |
| 7 | 120 ÷ 7 | leaves 1 |
Questions
Is 120 a prime number?
No, 120 is not a prime number. It is divisible by 2: 120 = 2 × 60.
What is the next prime after 120?
127.
What is the prime number before 120?
113.
What are the factors of 120?
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120.