Is 2011 a prime number?
Yes, 2011 is a prime number. Its only factors are 1 and 2011.
Is 2011 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 √2011 ≈ 44.84. If none of them divides 2011, it is prime.
- 3
None of them divides 2011, so it is prime.
Testing 2011 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 2011 ÷ 2 | leaves 1 |
| 3 | 2011 ÷ 3 | leaves 1 |
| 5 | 2011 ÷ 5 | leaves 1 |
| 7 | 2011 ÷ 7 | leaves 2 |
| 11 | 2011 ÷ 11 | leaves 9 |
| 13 | 2011 ÷ 13 | leaves 9 |
| 17 | 2011 ÷ 17 | leaves 5 |
| 19 | 2011 ÷ 19 | leaves 16 |
| 23 | 2011 ÷ 23 | leaves 10 |
| 29 | 2011 ÷ 29 | leaves 10 |
| 31 | 2011 ÷ 31 | leaves 27 |
| 37 | 2011 ÷ 37 | leaves 13 |
Questions
Is 2011 a prime number?
Yes, 2011 is a prime number. Its only factors are 1 and 2011.
What is the next prime after 2011?
2017.
What is the prime number before 2011?
2003.
What are the factors of 2011?
1, 2011.