Is 2138 a prime number?
No, 2138 is not a prime number. It is divisible by 2: 2138 = 2 × 1069.
Is 2138 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 √2138 ≈ 46.24. If none of them divides 2138, it is prime.
- 3
2 divides 2138 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 2138 = 2 \times 1069 \]
Testing 2138 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 2138 ÷ 2 | divides exactly (1069) |
| 3 | 2138 ÷ 3 | leaves 2 |
| 5 | 2138 ÷ 5 | leaves 3 |
| 7 | 2138 ÷ 7 | leaves 3 |
| 11 | 2138 ÷ 11 | leaves 4 |
| 13 | 2138 ÷ 13 | leaves 6 |
| 17 | 2138 ÷ 17 | leaves 13 |
| 19 | 2138 ÷ 19 | leaves 10 |
| 23 | 2138 ÷ 23 | leaves 22 |
| 29 | 2138 ÷ 29 | leaves 21 |
| 31 | 2138 ÷ 31 | leaves 30 |
| 37 | 2138 ÷ 37 | leaves 29 |
Questions
Is 2138 a prime number?
No, 2138 is not a prime number. It is divisible by 2: 2138 = 2 × 1069.
What is the next prime after 2138?
2141.
What is the prime number before 2138?
2137.
What are the factors of 2138?
1, 2, 1069, 2138.