Is 841 a prime number?
No, 841 is not a prime number. It is divisible by 29: 841 = 29 × 29.
Is 841 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 √841 ≈ 29.00. If none of them divides 841, it is prime.
- 3
29 divides 841 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 841 = 29^{2} \]Testing 841 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 841 ÷ 2 | leaves 1 |
| 3 | 841 ÷ 3 | leaves 1 |
| 5 | 841 ÷ 5 | leaves 1 |
| 7 | 841 ÷ 7 | leaves 1 |
| 11 | 841 ÷ 11 | leaves 5 |
| 13 | 841 ÷ 13 | leaves 9 |
| 17 | 841 ÷ 17 | leaves 8 |
| 19 | 841 ÷ 19 | leaves 5 |
| 23 | 841 ÷ 23 | leaves 13 |
| 29 | 841 ÷ 29 | divides exactly (29) |
Questions
Is 841 a prime number?
No, 841 is not a prime number. It is divisible by 29: 841 = 29 × 29.
What is the next prime after 841?
853.
What is the prime number before 841?
839.
What are the factors of 841?
1, 29, 841.