Is 1042 a prime number?
No, 1042 is not a prime number. It is divisible by 2: 1042 = 2 × 521.
Is 1042 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 √1042 ≈ 32.28. If none of them divides 1042, it is prime.
- 3
2 divides 1042 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 1042 = 2 \times 521 \]
Testing 1042 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 1042 ÷ 2 | divides exactly (521) |
| 3 | 1042 ÷ 3 | leaves 1 |
| 5 | 1042 ÷ 5 | leaves 2 |
| 7 | 1042 ÷ 7 | leaves 6 |
| 11 | 1042 ÷ 11 | leaves 8 |
| 13 | 1042 ÷ 13 | leaves 2 |
| 17 | 1042 ÷ 17 | leaves 5 |
| 19 | 1042 ÷ 19 | leaves 16 |
| 23 | 1042 ÷ 23 | leaves 7 |
| 29 | 1042 ÷ 29 | leaves 27 |
| 31 | 1042 ÷ 31 | leaves 19 |
Questions
Is 1042 a prime number?
No, 1042 is not a prime number. It is divisible by 2: 1042 = 2 × 521.
What is the next prime after 1042?
1049.
What is the prime number before 1042?
1039.
What are the factors of 1042?
1, 2, 521, 1042.