Is 1520 a prime number?
No, 1520 is not a prime number. It is divisible by 2: 1520 = 2 × 760.
Is 1520 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 √1520 ≈ 38.99. If none of them divides 1520, it is prime.
- 3
2 divides 1520 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 1520 = 2^{4} \times 5 \times 19 \]Testing 1520 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 1520 ÷ 2 | divides exactly (760) |
| 3 | 1520 ÷ 3 | leaves 2 |
| 5 | 1520 ÷ 5 | divides exactly (304) |
| 7 | 1520 ÷ 7 | leaves 1 |
| 11 | 1520 ÷ 11 | leaves 2 |
| 13 | 1520 ÷ 13 | leaves 12 |
| 17 | 1520 ÷ 17 | leaves 7 |
| 19 | 1520 ÷ 19 | divides exactly (80) |
| 23 | 1520 ÷ 23 | leaves 2 |
| 29 | 1520 ÷ 29 | leaves 12 |
| 31 | 1520 ÷ 31 | leaves 1 |
| 37 | 1520 ÷ 37 | leaves 3 |
Questions
Is 1520 a prime number?
No, 1520 is not a prime number. It is divisible by 2: 1520 = 2 × 760.
What is the next prime after 1520?
1523.
What is the prime number before 1520?
1511.
What are the factors of 1520?
1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520.