Is 122 a prime number?
No, 122 is not a prime number. It is divisible by 2: 122 = 2 × 61.
Is 122 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 √122 ≈ 11.05. If none of them divides 122, it is prime.
- 3
2 divides 122 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 122 = 2 \times 61 \]
Testing 122 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 122 ÷ 2 | divides exactly (61) |
| 3 | 122 ÷ 3 | leaves 2 |
| 5 | 122 ÷ 5 | leaves 2 |
| 7 | 122 ÷ 7 | leaves 3 |
| 11 | 122 ÷ 11 | leaves 1 |
Questions
Is 122 a prime number?
No, 122 is not a prime number. It is divisible by 2: 122 = 2 × 61.
What is the next prime after 122?
127.
What is the prime number before 122?
113.
What are the factors of 122?
1, 2, 61, 122.