Is 1320 a prime number?
No, 1320 is not a prime number. It is divisible by 2: 1320 = 2 × 660.
Is 1320 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 √1320 ≈ 36.33. If none of them divides 1320, it is prime.
- 3
2 divides 1320 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 1320 = 2^{3} \times 3 \times 5 \times 11 \]Testing 1320 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 1320 ÷ 2 | divides exactly (660) |
| 3 | 1320 ÷ 3 | divides exactly (440) |
| 5 | 1320 ÷ 5 | divides exactly (264) |
| 7 | 1320 ÷ 7 | leaves 4 |
| 11 | 1320 ÷ 11 | divides exactly (120) |
| 13 | 1320 ÷ 13 | leaves 7 |
| 17 | 1320 ÷ 17 | leaves 11 |
| 19 | 1320 ÷ 19 | leaves 9 |
| 23 | 1320 ÷ 23 | leaves 9 |
| 29 | 1320 ÷ 29 | leaves 15 |
| 31 | 1320 ÷ 31 | leaves 18 |
Questions
Is 1320 a prime number?
No, 1320 is not a prime number. It is divisible by 2: 1320 = 2 × 660.
What is the next prime after 1320?
1321.
What is the prime number before 1320?
1319.
What are the factors of 1320?
1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320.