Is 2020 a prime number?
No, 2020 is not a prime number. It is divisible by 2: 2020 = 2 × 1010.
Is 2020 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 √2020 ≈ 44.94. If none of them divides 2020, it is prime.
- 3
2 divides 2020 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 2020 = 2^{2} \times 5 \times 101 \]Testing 2020 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 2020 ÷ 2 | divides exactly (1010) |
| 3 | 2020 ÷ 3 | leaves 1 |
| 5 | 2020 ÷ 5 | divides exactly (404) |
| 7 | 2020 ÷ 7 | leaves 4 |
| 11 | 2020 ÷ 11 | leaves 7 |
| 13 | 2020 ÷ 13 | leaves 5 |
| 17 | 2020 ÷ 17 | leaves 14 |
| 19 | 2020 ÷ 19 | leaves 6 |
| 23 | 2020 ÷ 23 | leaves 19 |
| 29 | 2020 ÷ 29 | leaves 19 |
| 31 | 2020 ÷ 31 | leaves 5 |
| 37 | 2020 ÷ 37 | leaves 22 |
Questions
Is 2020 a prime number?
No, 2020 is not a prime number. It is divisible by 2: 2020 = 2 × 1010.
What is the next prime after 2020?
2027.
What is the prime number before 2020?
2017.
What are the factors of 2020?
1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020.